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% texinfo.tex -- TeX macros to handle Texinfo files.
% texinfo.tex -- TeX macros to handle Texinfo files.
% $Id: texinfo.tex,v 1.1.1.1 2001-05-18 11:27:30 markom Exp $
% $Id: texinfo.tex,v 1.1.1.1 2001-05-18 11:27:30 markom Exp $
%
%
% Copyright (C) 1985, 86, 88, 90, 91, 92, 93, 94, 95, 96, 97, 98
% Copyright (C) 1985, 86, 88, 90, 91, 92, 93, 94, 95, 96, 97, 98
% Free Software Foundation, Inc.
% Free Software Foundation, Inc.
%
%
% This texinfo.tex file is free software; you can redistribute it and/or
% This texinfo.tex file is free software; you can redistribute it and/or
% modify it under the terms of the GNU General Public License as
% modify it under the terms of the GNU General Public License as
% published by the Free Software Foundation; either version 2, or (at
% published by the Free Software Foundation; either version 2, or (at
% your option) any later version.
% your option) any later version.
%
%
% This texinfo.tex file is distributed in the hope that it will be
% This texinfo.tex file is distributed in the hope that it will be
% useful, but WITHOUT ANY WARRANTY; without even the implied warranty
% useful, but WITHOUT ANY WARRANTY; without even the implied warranty
% of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
% of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
% General Public License for more details.
% General Public License for more details.
%
%
% You should have received a copy of the GNU General Public License
% You should have received a copy of the GNU General Public License
% along with this texinfo.tex file; see the file COPYING.  If not, write
% along with this texinfo.tex file; see the file COPYING.  If not, write
% to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
% to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
% Boston, MA 02111-1307, USA.
% Boston, MA 02111-1307, USA.
%
%
% In other words, you are welcome to use, share and improve this program.
% In other words, you are welcome to use, share and improve this program.
% You are forbidden to forbid anyone else to use, share and improve
% You are forbidden to forbid anyone else to use, share and improve
% what you give them.   Help stamp out software-hoarding!
% what you give them.   Help stamp out software-hoarding!
%
%
% Please try the latest version of texinfo.tex before submitting bug
% Please try the latest version of texinfo.tex before submitting bug
% reports; you can get the latest version from:
% reports; you can get the latest version from:
%   ftp://ftp.gnu.org/pub/gnu/texinfo.tex
%   ftp://ftp.gnu.org/pub/gnu/texinfo.tex
%   /home/gd/gnu/doc/texinfo.tex on the GNU machines.
%   /home/gd/gnu/doc/texinfo.tex on the GNU machines.
%   (and all GNU mirrors, see http://www.gnu.org/order/ftp.html)
%   (and all GNU mirrors, see http://www.gnu.org/order/ftp.html)
%   ftp://tug.org/tex/texinfo.tex
%   ftp://tug.org/tex/texinfo.tex
%   ftp://ctan.org/macros/texinfo/texinfo.tex
%   ftp://ctan.org/macros/texinfo/texinfo.tex
%   (and all CTAN mirrors, finger ctan@ctan.org for a list).
%   (and all CTAN mirrors, finger ctan@ctan.org for a list).
% The texinfo.tex in the texinfo distribution itself could well be out
% The texinfo.tex in the texinfo distribution itself could well be out
% of date, so if that's what you're using, please check.
% of date, so if that's what you're using, please check.
%
%
% Send bug reports to bug-texinfo@gnu.org.
% Send bug reports to bug-texinfo@gnu.org.
% Please include a precise test case in each bug report,
% Please include a precise test case in each bug report,
% including a complete document with which we can reproduce the problem.
% including a complete document with which we can reproduce the problem.
%
%
% To process a Texinfo manual with TeX, it's most reliable to use the
% To process a Texinfo manual with TeX, it's most reliable to use the
% texi2dvi shell script that comes with the distribution.  For simple
% texi2dvi shell script that comes with the distribution.  For simple
% manuals, however, you can get away with:
% manuals, however, you can get away with:
%   tex foo.texi
%   tex foo.texi
%   texindex foo.??
%   texindex foo.??
%   tex foo.texi
%   tex foo.texi
%   tex foo.texi
%   tex foo.texi
%   dvips foo.dvi -o # or whatever, to process the dvi file.
%   dvips foo.dvi -o # or whatever, to process the dvi file.
% The extra runs of TeX get the cross-reference information correct.
% The extra runs of TeX get the cross-reference information correct.
% Sometimes one run after texindex suffices, and sometimes you need more
% Sometimes one run after texindex suffices, and sometimes you need more
% than two; texi2dvi does it as many times as necessary.
% than two; texi2dvi does it as many times as necessary.
 
 
 
 
% Make it possible to create a .fmt file just by loading this file:
% Make it possible to create a .fmt file just by loading this file:
% if the underlying format is not loaded, start by loading it now.
% if the underlying format is not loaded, start by loading it now.
% Added by gildea November 1993.
% Added by gildea November 1993.
\expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
\expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
 
 
% This automatically updates the version number based on RCS.
% This automatically updates the version number based on RCS.
\def\deftexinfoversion$#1: #2 ${\def\texinfoversion{#2}}
\def\deftexinfoversion$#1: #2 ${\def\texinfoversion{#2}}
\deftexinfoversion$Revision: 1.1.1.1 $
\deftexinfoversion$Revision: 1.1.1.1 $
\message{Loading texinfo package [Version \texinfoversion]:}
\message{Loading texinfo package [Version \texinfoversion]:}
 
 
% If in a .fmt file, print the version number
% If in a .fmt file, print the version number
% and turn on active characters that we couldn't do earlier because
% and turn on active characters that we couldn't do earlier because
% they might have appeared in the input file name.
% they might have appeared in the input file name.
\everyjob{\message{[Texinfo version \texinfoversion]}\message{}
\everyjob{\message{[Texinfo version \texinfoversion]}\message{}
  \catcode`+=\active \catcode`\_=\active}
  \catcode`+=\active \catcode`\_=\active}
 
 
% Save some parts of plain tex whose names we will redefine.
% Save some parts of plain tex whose names we will redefine.
 
 
\let\ptexb=\b
\let\ptexb=\b
\let\ptexbullet=\bullet
\let\ptexbullet=\bullet
\let\ptexc=\c
\let\ptexc=\c
\let\ptexcomma=\,
\let\ptexcomma=\,
\let\ptexdot=\.
\let\ptexdot=\.
\let\ptexdots=\dots
\let\ptexdots=\dots
\let\ptexend=\end
\let\ptexend=\end
\let\ptexequiv=\equiv
\let\ptexequiv=\equiv
\let\ptexexclam=\!
\let\ptexexclam=\!
\let\ptexi=\i
\let\ptexi=\i
\let\ptexlbrace=\{
\let\ptexlbrace=\{
\let\ptexrbrace=\}
\let\ptexrbrace=\}
\let\ptexstar=\*
\let\ptexstar=\*
\let\ptext=\t
\let\ptext=\t
 
 
% We never want plain's outer \+ definition in Texinfo.
% We never want plain's outer \+ definition in Texinfo.
% For @tex, we can use \tabalign.
% For @tex, we can use \tabalign.
\let\+ = \relax
\let\+ = \relax
 
 
 
 
\message{Basics,}
\message{Basics,}
\chardef\other=12
\chardef\other=12
 
 
% If this character appears in an error message or help string, it
% If this character appears in an error message or help string, it
% starts a new line in the output.
% starts a new line in the output.
\newlinechar = `^^J
\newlinechar = `^^J
 
 
% Set up fixed words for English if not already set.
% Set up fixed words for English if not already set.
\ifx\putwordAppendix\undefined \gdef\putwordAppendix{Appendix}\fi
\ifx\putwordAppendix\undefined \gdef\putwordAppendix{Appendix}\fi
\ifx\putwordChapter\undefined  \gdef\putwordChapter{Chapter}\fi
\ifx\putwordChapter\undefined  \gdef\putwordChapter{Chapter}\fi
\ifx\putwordfile\undefined     \gdef\putwordfile{file}\fi
\ifx\putwordfile\undefined     \gdef\putwordfile{file}\fi
\ifx\putwordInfo\undefined     \gdef\putwordInfo{Info}\fi
\ifx\putwordInfo\undefined     \gdef\putwordInfo{Info}\fi
\ifx\putwordMethodon\undefined \gdef\putwordMethodon{Method on}\fi
\ifx\putwordMethodon\undefined \gdef\putwordMethodon{Method on}\fi
\ifx\putwordon\undefined       \gdef\putwordon{on}\fi
\ifx\putwordon\undefined       \gdef\putwordon{on}\fi
\ifx\putwordpage\undefined     \gdef\putwordpage{page}\fi
\ifx\putwordpage\undefined     \gdef\putwordpage{page}\fi
\ifx\putwordsection\undefined  \gdef\putwordsection{section}\fi
\ifx\putwordsection\undefined  \gdef\putwordsection{section}\fi
\ifx\putwordSection\undefined  \gdef\putwordSection{Section}\fi
\ifx\putwordSection\undefined  \gdef\putwordSection{Section}\fi
\ifx\putwordsee\undefined      \gdef\putwordsee{see}\fi
\ifx\putwordsee\undefined      \gdef\putwordsee{see}\fi
\ifx\putwordSee\undefined      \gdef\putwordSee{See}\fi
\ifx\putwordSee\undefined      \gdef\putwordSee{See}\fi
\ifx\putwordShortContents\undefined  \gdef\putwordShortContents{Short Contents}\fi
\ifx\putwordShortContents\undefined  \gdef\putwordShortContents{Short Contents}\fi
\ifx\putwordTableofContents\undefined\gdef\putwordTableofContents{Table of Contents}\fi
\ifx\putwordTableofContents\undefined\gdef\putwordTableofContents{Table of Contents}\fi
 
 
% Ignore a token.
% Ignore a token.
%
%
\def\gobble#1{}
\def\gobble#1{}
 
 
\hyphenation{ap-pen-dix}
\hyphenation{ap-pen-dix}
\hyphenation{mini-buf-fer mini-buf-fers}
\hyphenation{mini-buf-fer mini-buf-fers}
\hyphenation{eshell}
\hyphenation{eshell}
\hyphenation{white-space}
\hyphenation{white-space}
 
 
% Margin to add to right of even pages, to left of odd pages.
% Margin to add to right of even pages, to left of odd pages.
\newdimen \bindingoffset
\newdimen \bindingoffset
\newdimen \normaloffset
\newdimen \normaloffset
\newdimen\pagewidth \newdimen\pageheight
\newdimen\pagewidth \newdimen\pageheight
 
 
% Sometimes it is convenient to have everything in the transcript file
% Sometimes it is convenient to have everything in the transcript file
% and nothing on the terminal.  We don't just call \tracingall here,
% and nothing on the terminal.  We don't just call \tracingall here,
% since that produces some useless output on the terminal.
% since that produces some useless output on the terminal.
%
%
\def\gloggingall{\begingroup \globaldefs = 1 \loggingall \endgroup}%
\def\gloggingall{\begingroup \globaldefs = 1 \loggingall \endgroup}%
\ifx\eTeXversion\undefined
\ifx\eTeXversion\undefined
\def\loggingall{\tracingcommands2 \tracingstats2
\def\loggingall{\tracingcommands2 \tracingstats2
   \tracingpages1 \tracingoutput1 \tracinglostchars1
   \tracingpages1 \tracingoutput1 \tracinglostchars1
   \tracingmacros2 \tracingparagraphs1 \tracingrestores1
   \tracingmacros2 \tracingparagraphs1 \tracingrestores1
   \showboxbreadth\maxdimen\showboxdepth\maxdimen
   \showboxbreadth\maxdimen\showboxdepth\maxdimen
}%
}%
\else
\else
\def\loggingall{\tracingcommands3 \tracingstats2
\def\loggingall{\tracingcommands3 \tracingstats2
   \tracingpages1 \tracingoutput1 \tracinglostchars1
   \tracingpages1 \tracingoutput1 \tracinglostchars1
   \tracingmacros2 \tracingparagraphs1 \tracingrestores1
   \tracingmacros2 \tracingparagraphs1 \tracingrestores1
   \tracingscantokens1 \tracingassigns1 \tracingifs1
   \tracingscantokens1 \tracingassigns1 \tracingifs1
   \tracinggroups1 \tracingnesting2
   \tracinggroups1 \tracingnesting2
   \showboxbreadth\maxdimen\showboxdepth\maxdimen
   \showboxbreadth\maxdimen\showboxdepth\maxdimen
}%
}%
\fi
\fi
 
 
% For @cropmarks command.
% For @cropmarks command.
% Do @cropmarks to get crop marks.
% Do @cropmarks to get crop marks.
%
%
\newif\ifcropmarks
\newif\ifcropmarks
\let\cropmarks = \cropmarkstrue
\let\cropmarks = \cropmarkstrue
%
%
% Dimensions to add cropmarks at corners.
% Dimensions to add cropmarks at corners.
% Added by P. A. MacKay, 12 Nov. 1986
% Added by P. A. MacKay, 12 Nov. 1986
%
%
\newdimen\outerhsize \newdimen\outervsize % set by the paper size routines
\newdimen\outerhsize \newdimen\outervsize % set by the paper size routines
\newdimen\cornerlong  \cornerlong=1pc
\newdimen\cornerlong  \cornerlong=1pc
\newdimen\cornerthick \cornerthick=.3pt
\newdimen\cornerthick \cornerthick=.3pt
\newdimen\topandbottommargin \topandbottommargin=.75in
\newdimen\topandbottommargin \topandbottommargin=.75in
 
 
% Main output routine.
% Main output routine.
\chardef\PAGE = 255
\chardef\PAGE = 255
\output = {\onepageout{\pagecontents\PAGE}}
\output = {\onepageout{\pagecontents\PAGE}}
 
 
\newbox\headlinebox
\newbox\headlinebox
\newbox\footlinebox
\newbox\footlinebox
 
 
% \onepageout takes a vbox as an argument.  Note that \pagecontents
% \onepageout takes a vbox as an argument.  Note that \pagecontents
% does insertions, but you have to call it yourself.
% does insertions, but you have to call it yourself.
\def\onepageout#1{%
\def\onepageout#1{%
  \ifcropmarks \hoffset=0pt \else \hoffset=\normaloffset \fi
  \ifcropmarks \hoffset=0pt \else \hoffset=\normaloffset \fi
  %
  %
  \ifodd\pageno  \advance\hoffset by \bindingoffset
  \ifodd\pageno  \advance\hoffset by \bindingoffset
  \else \advance\hoffset by -\bindingoffset\fi
  \else \advance\hoffset by -\bindingoffset\fi
  %
  %
  % Do this outside of the \shipout so @code etc. will be expanded in
  % Do this outside of the \shipout so @code etc. will be expanded in
  % the headline as they should be, not taken literally (outputting ''code).
  % the headline as they should be, not taken literally (outputting ''code).
  \setbox\headlinebox = \vbox{\let\hsize=\pagewidth \makeheadline}%
  \setbox\headlinebox = \vbox{\let\hsize=\pagewidth \makeheadline}%
  \setbox\footlinebox = \vbox{\let\hsize=\pagewidth \makefootline}%
  \setbox\footlinebox = \vbox{\let\hsize=\pagewidth \makefootline}%
  %
  %
  {%
  {%
    % Have to do this stuff outside the \shipout because we want it to
    % Have to do this stuff outside the \shipout because we want it to
    % take effect in \write's, yet the group defined by the \vbox ends
    % take effect in \write's, yet the group defined by the \vbox ends
    % before the \shipout runs.
    % before the \shipout runs.
    %
    %
    \escapechar = `\\     % use backslash in output files.
    \escapechar = `\\     % use backslash in output files.
    \indexdummies         % don't expand commands in the output.
    \indexdummies         % don't expand commands in the output.
    \normalturnoffactive  % \ in index entries must not stay \, e.g., if
    \normalturnoffactive  % \ in index entries must not stay \, e.g., if
                   % the page break happens to be in the middle of an example.
                   % the page break happens to be in the middle of an example.
    \shipout\vbox{%
    \shipout\vbox{%
      \ifcropmarks \vbox to \outervsize\bgroup
      \ifcropmarks \vbox to \outervsize\bgroup
        \hsize = \outerhsize
        \hsize = \outerhsize
        \line{\ewtop\hfil\ewtop}%
        \line{\ewtop\hfil\ewtop}%
        \nointerlineskip
        \nointerlineskip
        \line{%
        \line{%
          \vbox{\moveleft\cornerthick\nstop}%
          \vbox{\moveleft\cornerthick\nstop}%
          \hfill
          \hfill
          \vbox{\moveright\cornerthick\nstop}%
          \vbox{\moveright\cornerthick\nstop}%
        }%
        }%
        \vskip\topandbottommargin
        \vskip\topandbottommargin
        \line\bgroup
        \line\bgroup
          \hfil % center the page within the outer (page) hsize.
          \hfil % center the page within the outer (page) hsize.
          \ifodd\pageno\hskip\bindingoffset\fi
          \ifodd\pageno\hskip\bindingoffset\fi
          \vbox\bgroup
          \vbox\bgroup
      \fi
      \fi
      %
      %
      \unvbox\headlinebox
      \unvbox\headlinebox
      \pagebody{#1}%
      \pagebody{#1}%
      \ifdim\ht\footlinebox > 0pt
      \ifdim\ht\footlinebox > 0pt
        % Only leave this space if the footline is nonempty.
        % Only leave this space if the footline is nonempty.
        % (We lessened \vsize for it in \oddfootingxxx.)
        % (We lessened \vsize for it in \oddfootingxxx.)
        % The \baselineskip=24pt in plain's \makefootline has no effect.
        % The \baselineskip=24pt in plain's \makefootline has no effect.
        \vskip 2\baselineskip
        \vskip 2\baselineskip
        \unvbox\footlinebox
        \unvbox\footlinebox
      \fi
      \fi
      %
      %
      \ifcropmarks
      \ifcropmarks
          \egroup % end of \vbox\bgroup
          \egroup % end of \vbox\bgroup
        \hfil\egroup % end of (centering) \line\bgroup
        \hfil\egroup % end of (centering) \line\bgroup
        \vskip\topandbottommargin plus1fill minus1fill
        \vskip\topandbottommargin plus1fill minus1fill
        \boxmaxdepth = \cornerthick
        \boxmaxdepth = \cornerthick
        \line{%
        \line{%
          \vbox{\moveleft\cornerthick\nsbot}%
          \vbox{\moveleft\cornerthick\nsbot}%
          \hfill
          \hfill
          \vbox{\moveright\cornerthick\nsbot}%
          \vbox{\moveright\cornerthick\nsbot}%
        }%
        }%
        \nointerlineskip
        \nointerlineskip
        \line{\ewbot\hfil\ewbot}%
        \line{\ewbot\hfil\ewbot}%
      \egroup % \vbox from first cropmarks clause
      \egroup % \vbox from first cropmarks clause
      \fi
      \fi
    }% end of \shipout\vbox
    }% end of \shipout\vbox
  }% end of group with \turnoffactive
  }% end of group with \turnoffactive
  \advancepageno
  \advancepageno
  \ifnum\outputpenalty>-20000 \else\dosupereject\fi
  \ifnum\outputpenalty>-20000 \else\dosupereject\fi
}
}
 
 
\newinsert\margin \dimen\margin=\maxdimen
\newinsert\margin \dimen\margin=\maxdimen
 
 
\def\pagebody#1{\vbox to\pageheight{\boxmaxdepth=\maxdepth #1}}
\def\pagebody#1{\vbox to\pageheight{\boxmaxdepth=\maxdepth #1}}
{\catcode`\@ =11
{\catcode`\@ =11
\gdef\pagecontents#1{\ifvoid\topins\else\unvbox\topins\fi
\gdef\pagecontents#1{\ifvoid\topins\else\unvbox\topins\fi
% marginal hacks, juha@viisa.uucp (Juha Takala)
% marginal hacks, juha@viisa.uucp (Juha Takala)
\ifvoid\margin\else % marginal info is present
\ifvoid\margin\else % marginal info is present
  \rlap{\kern\hsize\vbox to\z@{\kern1pt\box\margin \vss}}\fi
  \rlap{\kern\hsize\vbox to\z@{\kern1pt\box\margin \vss}}\fi
\dimen@=\dp#1 \unvbox#1
\dimen@=\dp#1 \unvbox#1
\ifvoid\footins\else\vskip\skip\footins\footnoterule \unvbox\footins\fi
\ifvoid\footins\else\vskip\skip\footins\footnoterule \unvbox\footins\fi
\ifr@ggedbottom \kern-\dimen@ \vfil \fi}
\ifr@ggedbottom \kern-\dimen@ \vfil \fi}
}
}
 
 
% Here are the rules for the cropmarks.  Note that they are
% Here are the rules for the cropmarks.  Note that they are
% offset so that the space between them is truly \outerhsize or \outervsize
% offset so that the space between them is truly \outerhsize or \outervsize
% (P. A. MacKay, 12 November, 1986)
% (P. A. MacKay, 12 November, 1986)
%
%
\def\ewtop{\vrule height\cornerthick depth0pt width\cornerlong}
\def\ewtop{\vrule height\cornerthick depth0pt width\cornerlong}
\def\nstop{\vbox
\def\nstop{\vbox
  {\hrule height\cornerthick depth\cornerlong width\cornerthick}}
  {\hrule height\cornerthick depth\cornerlong width\cornerthick}}
\def\ewbot{\vrule height0pt depth\cornerthick width\cornerlong}
\def\ewbot{\vrule height0pt depth\cornerthick width\cornerlong}
\def\nsbot{\vbox
\def\nsbot{\vbox
  {\hrule height\cornerlong depth\cornerthick width\cornerthick}}
  {\hrule height\cornerlong depth\cornerthick width\cornerthick}}
 
 
% Parse an argument, then pass it to #1.  The argument is the rest of
% Parse an argument, then pass it to #1.  The argument is the rest of
% the input line (except we remove a trailing comment).  #1 should be a
% the input line (except we remove a trailing comment).  #1 should be a
% macro which expects an ordinary undelimited TeX argument.
% macro which expects an ordinary undelimited TeX argument.
%
%
\def\parsearg#1{%
\def\parsearg#1{%
  \let\next = #1%
  \let\next = #1%
  \begingroup
  \begingroup
    \obeylines
    \obeylines
    \futurelet\temp\parseargx
    \futurelet\temp\parseargx
}
}
 
 
% If the next token is an obeyed space (from an @example environment or
% If the next token is an obeyed space (from an @example environment or
% the like), remove it and recurse.  Otherwise, we're done.
% the like), remove it and recurse.  Otherwise, we're done.
\def\parseargx{%
\def\parseargx{%
  % \obeyedspace is defined far below, after the definition of \sepspaces.
  % \obeyedspace is defined far below, after the definition of \sepspaces.
  \ifx\obeyedspace\temp
  \ifx\obeyedspace\temp
    \expandafter\parseargdiscardspace
    \expandafter\parseargdiscardspace
  \else
  \else
    \expandafter\parseargline
    \expandafter\parseargline
  \fi
  \fi
}
}
 
 
% Remove a single space (as the delimiter token to the macro call).
% Remove a single space (as the delimiter token to the macro call).
{\obeyspaces %
{\obeyspaces %
 \gdef\parseargdiscardspace {\futurelet\temp\parseargx}}
 \gdef\parseargdiscardspace {\futurelet\temp\parseargx}}
 
 
{\obeylines %
{\obeylines %
  \gdef\parseargline#1^^M{%
  \gdef\parseargline#1^^M{%
    \endgroup % End of the group started in \parsearg.
    \endgroup % End of the group started in \parsearg.
    %
    %
    % First remove any @c comment, then any @comment.
    % First remove any @c comment, then any @comment.
    % Result of each macro is put in \toks0.
    % Result of each macro is put in \toks0.
    \argremovec #1\c\relax %
    \argremovec #1\c\relax %
    \expandafter\argremovecomment \the\toks0 \comment\relax %
    \expandafter\argremovecomment \the\toks0 \comment\relax %
    %
    %
    % Call the caller's macro, saved as \next in \parsearg.
    % Call the caller's macro, saved as \next in \parsearg.
    \expandafter\next\expandafter{\the\toks0}%
    \expandafter\next\expandafter{\the\toks0}%
  }%
  }%
}
}
 
 
% Since all \c{,omment} does is throw away the argument, we can let TeX
% Since all \c{,omment} does is throw away the argument, we can let TeX
% do that for us.  The \relax here is matched by the \relax in the call
% do that for us.  The \relax here is matched by the \relax in the call
% in \parseargline; it could be more or less anything, its purpose is
% in \parseargline; it could be more or less anything, its purpose is
% just to delimit the argument to the \c.
% just to delimit the argument to the \c.
\def\argremovec#1\c#2\relax{\toks0 = {#1}}
\def\argremovec#1\c#2\relax{\toks0 = {#1}}
\def\argremovecomment#1\comment#2\relax{\toks0 = {#1}}
\def\argremovecomment#1\comment#2\relax{\toks0 = {#1}}
 
 
% \argremovec{,omment} might leave us with trailing spaces, though; e.g.,
% \argremovec{,omment} might leave us with trailing spaces, though; e.g.,
%    @end itemize  @c foo
%    @end itemize  @c foo
% will have two active spaces as part of the argument with the
% will have two active spaces as part of the argument with the
% `itemize'.  Here we remove all active spaces from #1, and assign the
% `itemize'.  Here we remove all active spaces from #1, and assign the
% result to \toks0.
% result to \toks0.
%
%
% This loses if there are any *other* active characters besides spaces
% This loses if there are any *other* active characters besides spaces
% in the argument -- _ ^ +, for example -- since they get expanded.
% in the argument -- _ ^ +, for example -- since they get expanded.
% Fortunately, Texinfo does not define any such commands.  (If it ever
% Fortunately, Texinfo does not define any such commands.  (If it ever
% does, the catcode of the characters in questionwill have to be changed
% does, the catcode of the characters in questionwill have to be changed
% here.)  But this means we cannot call \removeactivespaces as part of
% here.)  But this means we cannot call \removeactivespaces as part of
% \argremovec{,omment}, since @c uses \parsearg, and thus the argument
% \argremovec{,omment}, since @c uses \parsearg, and thus the argument
% that \parsearg gets might well have any character at all in it.
% that \parsearg gets might well have any character at all in it.
%
%
\def\removeactivespaces#1{%
\def\removeactivespaces#1{%
  \begingroup
  \begingroup
    \ignoreactivespaces
    \ignoreactivespaces
    \edef\temp{#1}%
    \edef\temp{#1}%
    \global\toks0 = \expandafter{\temp}%
    \global\toks0 = \expandafter{\temp}%
  \endgroup
  \endgroup
}
}
 
 
% Change the active space to expand to nothing.
% Change the active space to expand to nothing.
%
%
\begingroup
\begingroup
  \obeyspaces
  \obeyspaces
  \gdef\ignoreactivespaces{\obeyspaces\let =\empty}
  \gdef\ignoreactivespaces{\obeyspaces\let =\empty}
\endgroup
\endgroup
 
 
 
 
\def\flushcr{\ifx\par\lisppar \def\next##1{}\else \let\next=\relax \fi \next}
\def\flushcr{\ifx\par\lisppar \def\next##1{}\else \let\next=\relax \fi \next}
 
 
%% These are used to keep @begin/@end levels from running away
%% These are used to keep @begin/@end levels from running away
%% Call \inENV within environments (after a \begingroup)
%% Call \inENV within environments (after a \begingroup)
\newif\ifENV \ENVfalse \def\inENV{\ifENV\relax\else\ENVtrue\fi}
\newif\ifENV \ENVfalse \def\inENV{\ifENV\relax\else\ENVtrue\fi}
\def\ENVcheck{%
\def\ENVcheck{%
\ifENV\errmessage{Still within an environment; press RETURN to continue}
\ifENV\errmessage{Still within an environment; press RETURN to continue}
\endgroup\fi} % This is not perfect, but it should reduce lossage
\endgroup\fi} % This is not perfect, but it should reduce lossage
 
 
% @begin foo  is the same as @foo, for now.
% @begin foo  is the same as @foo, for now.
\newhelp\EMsimple{Press RETURN to continue.}
\newhelp\EMsimple{Press RETURN to continue.}
 
 
\outer\def\begin{\parsearg\beginxxx}
\outer\def\begin{\parsearg\beginxxx}
 
 
\def\beginxxx #1{%
\def\beginxxx #1{%
\expandafter\ifx\csname #1\endcsname\relax
\expandafter\ifx\csname #1\endcsname\relax
{\errhelp=\EMsimple \errmessage{Undefined command @begin #1}}\else
{\errhelp=\EMsimple \errmessage{Undefined command @begin #1}}\else
\csname #1\endcsname\fi}
\csname #1\endcsname\fi}
 
 
% @end foo executes the definition of \Efoo.
% @end foo executes the definition of \Efoo.
%
%
\def\end{\parsearg\endxxx}
\def\end{\parsearg\endxxx}
\def\endxxx #1{%
\def\endxxx #1{%
  \removeactivespaces{#1}%
  \removeactivespaces{#1}%
  \edef\endthing{\the\toks0}%
  \edef\endthing{\the\toks0}%
  %
  %
  \expandafter\ifx\csname E\endthing\endcsname\relax
  \expandafter\ifx\csname E\endthing\endcsname\relax
    \expandafter\ifx\csname \endthing\endcsname\relax
    \expandafter\ifx\csname \endthing\endcsname\relax
      % There's no \foo, i.e., no ``environment'' foo.
      % There's no \foo, i.e., no ``environment'' foo.
      \errhelp = \EMsimple
      \errhelp = \EMsimple
      \errmessage{Undefined command `@end \endthing'}%
      \errmessage{Undefined command `@end \endthing'}%
    \else
    \else
      \unmatchedenderror\endthing
      \unmatchedenderror\endthing
    \fi
    \fi
  \else
  \else
    % Everything's ok; the right environment has been started.
    % Everything's ok; the right environment has been started.
    \csname E\endthing\endcsname
    \csname E\endthing\endcsname
  \fi
  \fi
}
}
 
 
% There is an environment #1, but it hasn't been started.  Give an error.
% There is an environment #1, but it hasn't been started.  Give an error.
%
%
\def\unmatchedenderror#1{%
\def\unmatchedenderror#1{%
  \errhelp = \EMsimple
  \errhelp = \EMsimple
  \errmessage{This `@end #1' doesn't have a matching `@#1'}%
  \errmessage{This `@end #1' doesn't have a matching `@#1'}%
}
}
 
 
% Define the control sequence \E#1 to give an unmatched @end error.
% Define the control sequence \E#1 to give an unmatched @end error.
%
%
\def\defineunmatchedend#1{%
\def\defineunmatchedend#1{%
  \expandafter\def\csname E#1\endcsname{\unmatchedenderror{#1}}%
  \expandafter\def\csname E#1\endcsname{\unmatchedenderror{#1}}%
}
}
 
 
 
 
% Single-spacing is done by various environments (specifically, in
% Single-spacing is done by various environments (specifically, in
% \nonfillstart and \quotations).
% \nonfillstart and \quotations).
\newskip\singlespaceskip \singlespaceskip = 12.5pt
\newskip\singlespaceskip \singlespaceskip = 12.5pt
\def\singlespace{%
\def\singlespace{%
  % Why was this kern here?  It messes up equalizing space above and below
  % Why was this kern here?  It messes up equalizing space above and below
  % environments.  --karl, 6may93
  % environments.  --karl, 6may93
  %{\advance \baselineskip by -\singlespaceskip
  %{\advance \baselineskip by -\singlespaceskip
  %\kern \baselineskip}%
  %\kern \baselineskip}%
  \setleading \singlespaceskip
  \setleading \singlespaceskip
}
}
 
 
%% Simple single-character @ commands
%% Simple single-character @ commands
 
 
% @@ prints an @
% @@ prints an @
% Kludge this until the fonts are right (grr).
% Kludge this until the fonts are right (grr).
\def\@{{\tt\char64}}
\def\@{{\tt\char64}}
 
 
% This is turned off because it was never documented
% This is turned off because it was never documented
% and you can use @w{...} around a quote to suppress ligatures.
% and you can use @w{...} around a quote to suppress ligatures.
%% Define @` and @' to be the same as ` and '
%% Define @` and @' to be the same as ` and '
%% but suppressing ligatures.
%% but suppressing ligatures.
%\def\`{{`}}
%\def\`{{`}}
%\def\'{{'}}
%\def\'{{'}}
 
 
% Used to generate quoted braces.
% Used to generate quoted braces.
\def\mylbrace {{\tt\char123}}
\def\mylbrace {{\tt\char123}}
\def\myrbrace {{\tt\char125}}
\def\myrbrace {{\tt\char125}}
\let\{=\mylbrace
\let\{=\mylbrace
\let\}=\myrbrace
\let\}=\myrbrace
\begingroup
\begingroup
  % Definitions to produce actual \{ & \} command in an index.
  % Definitions to produce actual \{ & \} command in an index.
  \catcode`\{ = 12 \catcode`\} = 12
  \catcode`\{ = 12 \catcode`\} = 12
  \catcode`\[ = 1 \catcode`\] = 2
  \catcode`\[ = 1 \catcode`\] = 2
  \catcode`\@ = 0 \catcode`\\ = 12
  \catcode`\@ = 0 \catcode`\\ = 12
  @gdef@lbracecmd[\{]%
  @gdef@lbracecmd[\{]%
  @gdef@rbracecmd[\}]%
  @gdef@rbracecmd[\}]%
@endgroup
@endgroup
 
 
% Accents: @, @dotaccent @ringaccent @ubaraccent @udotaccent
% Accents: @, @dotaccent @ringaccent @ubaraccent @udotaccent
% Others are defined by plain TeX: @` @' @" @^ @~ @= @v @H.
% Others are defined by plain TeX: @` @' @" @^ @~ @= @v @H.
\let\, = \c
\let\, = \c
\let\dotaccent = \.
\let\dotaccent = \.
\def\ringaccent#1{{\accent23 #1}}
\def\ringaccent#1{{\accent23 #1}}
\let\tieaccent = \t
\let\tieaccent = \t
\let\ubaraccent = \b
\let\ubaraccent = \b
\let\udotaccent = \d
\let\udotaccent = \d
 
 
% Other special characters: @questiondown @exclamdown
% Other special characters: @questiondown @exclamdown
% Plain TeX defines: @AA @AE @O @OE @L (and lowercase versions) @ss.
% Plain TeX defines: @AA @AE @O @OE @L (and lowercase versions) @ss.
\def\questiondown{?`}
\def\questiondown{?`}
\def\exclamdown{!`}
\def\exclamdown{!`}
 
 
% Dotless i and dotless j, used for accents.
% Dotless i and dotless j, used for accents.
\def\imacro{i}
\def\imacro{i}
\def\jmacro{j}
\def\jmacro{j}
\def\dotless#1{%
\def\dotless#1{%
  \def\temp{#1}%
  \def\temp{#1}%
  \ifx\temp\imacro \ptexi
  \ifx\temp\imacro \ptexi
  \else\ifx\temp\jmacro \j
  \else\ifx\temp\jmacro \j
  \else \errmessage{@dotless can be used only with i or j}%
  \else \errmessage{@dotless can be used only with i or j}%
  \fi\fi
  \fi\fi
}
}
 
 
% Be sure we're in horizontal mode when doing a tie, since we make space
% Be sure we're in horizontal mode when doing a tie, since we make space
% equivalent to this in @example-like environments. Otherwise, a space
% equivalent to this in @example-like environments. Otherwise, a space
% at the beginning of a line will start with \penalty -- and
% at the beginning of a line will start with \penalty -- and
% since \penalty is valid in vertical mode, we'd end up putting the
% since \penalty is valid in vertical mode, we'd end up putting the
% penalty on the vertical list instead of in the new paragraph.
% penalty on the vertical list instead of in the new paragraph.
{\catcode`@ = 11
{\catcode`@ = 11
 % Avoid using \@M directly, because that causes trouble
 % Avoid using \@M directly, because that causes trouble
 % if the definition is written into an index file.
 % if the definition is written into an index file.
 \global\let\tiepenalty = \@M
 \global\let\tiepenalty = \@M
 \gdef\tie{\leavevmode\penalty\tiepenalty\ }
 \gdef\tie{\leavevmode\penalty\tiepenalty\ }
}
}
 
 
% @: forces normal size whitespace following.
% @: forces normal size whitespace following.
\def\:{\spacefactor=1000 }
\def\:{\spacefactor=1000 }
 
 
% @* forces a line break.
% @* forces a line break.
\def\*{\hfil\break\hbox{}\ignorespaces}
\def\*{\hfil\break\hbox{}\ignorespaces}
 
 
% @. is an end-of-sentence period.
% @. is an end-of-sentence period.
\def\.{.\spacefactor=3000 }
\def\.{.\spacefactor=3000 }
 
 
% @! is an end-of-sentence bang.
% @! is an end-of-sentence bang.
\def\!{!\spacefactor=3000 }
\def\!{!\spacefactor=3000 }
 
 
% @? is an end-of-sentence query.
% @? is an end-of-sentence query.
\def\?{?\spacefactor=3000 }
\def\?{?\spacefactor=3000 }
 
 
% @w prevents a word break.  Without the \leavevmode, @w at the
% @w prevents a word break.  Without the \leavevmode, @w at the
% beginning of a paragraph, when TeX is still in vertical mode, would
% beginning of a paragraph, when TeX is still in vertical mode, would
% produce a whole line of output instead of starting the paragraph.
% produce a whole line of output instead of starting the paragraph.
\def\w#1{\leavevmode\hbox{#1}}
\def\w#1{\leavevmode\hbox{#1}}
 
 
% @group ... @end group forces ... to be all on one page, by enclosing
% @group ... @end group forces ... to be all on one page, by enclosing
% it in a TeX vbox.  We use \vtop instead of \vbox to construct the box
% it in a TeX vbox.  We use \vtop instead of \vbox to construct the box
% to keep its height that of a normal line.  According to the rules for
% to keep its height that of a normal line.  According to the rules for
% \topskip (p.114 of the TeXbook), the glue inserted is
% \topskip (p.114 of the TeXbook), the glue inserted is
% max (\topskip - \ht (first item), 0).  If that height is large,
% max (\topskip - \ht (first item), 0).  If that height is large,
% therefore, no glue is inserted, and the space between the headline and
% therefore, no glue is inserted, and the space between the headline and
% the text is small, which looks bad.
% the text is small, which looks bad.
%
%
\def\group{\begingroup
\def\group{\begingroup
  \ifnum\catcode13=\active \else
  \ifnum\catcode13=\active \else
    \errhelp = \groupinvalidhelp
    \errhelp = \groupinvalidhelp
    \errmessage{@group invalid in context where filling is enabled}%
    \errmessage{@group invalid in context where filling is enabled}%
  \fi
  \fi
  %
  %
  % The \vtop we start below produces a box with normal height and large
  % The \vtop we start below produces a box with normal height and large
  % depth; thus, TeX puts \baselineskip glue before it, and (when the
  % depth; thus, TeX puts \baselineskip glue before it, and (when the
  % next line of text is done) \lineskip glue after it.  (See p.82 of
  % next line of text is done) \lineskip glue after it.  (See p.82 of
  % the TeXbook.)  Thus, space below is not quite equal to space
  % the TeXbook.)  Thus, space below is not quite equal to space
  % above.  But it's pretty close.
  % above.  But it's pretty close.
  \def\Egroup{%
  \def\Egroup{%
    \egroup           % End the \vtop.
    \egroup           % End the \vtop.
    \endgroup         % End the \group.
    \endgroup         % End the \group.
  }%
  }%
  %
  %
  \vtop\bgroup
  \vtop\bgroup
    % We have to put a strut on the last line in case the @group is in
    % We have to put a strut on the last line in case the @group is in
    % the midst of an example, rather than completely enclosing it.
    % the midst of an example, rather than completely enclosing it.
    % Otherwise, the interline space between the last line of the group
    % Otherwise, the interline space between the last line of the group
    % and the first line afterwards is too small.  But we can't put the
    % and the first line afterwards is too small.  But we can't put the
    % strut in \Egroup, since there it would be on a line by itself.
    % strut in \Egroup, since there it would be on a line by itself.
    % Hence this just inserts a strut at the beginning of each line.
    % Hence this just inserts a strut at the beginning of each line.
    \everypar = {\strut}%
    \everypar = {\strut}%
    %
    %
    % Since we have a strut on every line, we don't need any of TeX's
    % Since we have a strut on every line, we don't need any of TeX's
    % normal interline spacing.
    % normal interline spacing.
    \offinterlineskip
    \offinterlineskip
    %
    %
    % OK, but now we have to do something about blank
    % OK, but now we have to do something about blank
    % lines in the input in @example-like environments, which normally
    % lines in the input in @example-like environments, which normally
    % just turn into \lisppar, which will insert no space now that we've
    % just turn into \lisppar, which will insert no space now that we've
    % turned off the interline space.  Simplest is to make them be an
    % turned off the interline space.  Simplest is to make them be an
    % empty paragraph.
    % empty paragraph.
    \ifx\par\lisppar
    \ifx\par\lisppar
      \edef\par{\leavevmode \par}%
      \edef\par{\leavevmode \par}%
      %
      %
      % Reset ^^M's definition to new definition of \par.
      % Reset ^^M's definition to new definition of \par.
      \obeylines
      \obeylines
    \fi
    \fi
    %
    %
    % Do @comment since we are called inside an environment such as
    % Do @comment since we are called inside an environment such as
    % @example, where each end-of-line in the input causes an
    % @example, where each end-of-line in the input causes an
    % end-of-line in the output.  We don't want the end-of-line after
    % end-of-line in the output.  We don't want the end-of-line after
    % the `@group' to put extra space in the output.  Since @group
    % the `@group' to put extra space in the output.  Since @group
    % should appear on a line by itself (according to the Texinfo
    % should appear on a line by itself (according to the Texinfo
    % manual), we don't worry about eating any user text.
    % manual), we don't worry about eating any user text.
    \comment
    \comment
}
}
%
%
% TeX puts in an \escapechar (i.e., `@') at the beginning of the help
% TeX puts in an \escapechar (i.e., `@') at the beginning of the help
% message, so this ends up printing `@group can only ...'.
% message, so this ends up printing `@group can only ...'.
%
%
\newhelp\groupinvalidhelp{%
\newhelp\groupinvalidhelp{%
group can only be used in environments such as @example,^^J%
group can only be used in environments such as @example,^^J%
where each line of input produces a line of output.}
where each line of input produces a line of output.}
 
 
% @need space-in-mils
% @need space-in-mils
% forces a page break if there is not space-in-mils remaining.
% forces a page break if there is not space-in-mils remaining.
 
 
\newdimen\mil  \mil=0.001in
\newdimen\mil  \mil=0.001in
 
 
\def\need{\parsearg\needx}
\def\need{\parsearg\needx}
 
 
% Old definition--didn't work.
% Old definition--didn't work.
%\def\needx #1{\par %
%\def\needx #1{\par %
%% This method tries to make TeX break the page naturally
%% This method tries to make TeX break the page naturally
%% if the depth of the box does not fit.
%% if the depth of the box does not fit.
%{\baselineskip=0pt%
%{\baselineskip=0pt%
%\vtop to #1\mil{\vfil}\kern -#1\mil\nobreak
%\vtop to #1\mil{\vfil}\kern -#1\mil\nobreak
%\prevdepth=-1000pt
%\prevdepth=-1000pt
%}}
%}}
 
 
\def\needx#1{%
\def\needx#1{%
  % Go into vertical mode, so we don't make a big box in the middle of a
  % Go into vertical mode, so we don't make a big box in the middle of a
  % paragraph.
  % paragraph.
  \par
  \par
  %
  %
  % Don't add any leading before our big empty box, but allow a page
  % Don't add any leading before our big empty box, but allow a page
  % break, since the best break might be right here.
  % break, since the best break might be right here.
  \allowbreak
  \allowbreak
  \nointerlineskip
  \nointerlineskip
  \vtop to #1\mil{\vfil}%
  \vtop to #1\mil{\vfil}%
  %
  %
  % TeX does not even consider page breaks if a penalty added to the
  % TeX does not even consider page breaks if a penalty added to the
  % main vertical list is 10000 or more.  But in order to see if the
  % main vertical list is 10000 or more.  But in order to see if the
  % empty box we just added fits on the page, we must make it consider
  % empty box we just added fits on the page, we must make it consider
  % page breaks.  On the other hand, we don't want to actually break the
  % page breaks.  On the other hand, we don't want to actually break the
  % page after the empty box.  So we use a penalty of 9999.
  % page after the empty box.  So we use a penalty of 9999.
  %
  %
  % There is an extremely small chance that TeX will actually break the
  % There is an extremely small chance that TeX will actually break the
  % page at this \penalty, if there are no other feasible breakpoints in
  % page at this \penalty, if there are no other feasible breakpoints in
  % sight.  (If the user is using lots of big @group commands, which
  % sight.  (If the user is using lots of big @group commands, which
  % almost-but-not-quite fill up a page, TeX will have a hard time doing
  % almost-but-not-quite fill up a page, TeX will have a hard time doing
  % good page breaking, for example.)  However, I could not construct an
  % good page breaking, for example.)  However, I could not construct an
  % example where a page broke at this \penalty; if it happens in a real
  % example where a page broke at this \penalty; if it happens in a real
  % document, then we can reconsider our strategy.
  % document, then we can reconsider our strategy.
  \penalty9999
  \penalty9999
  %
  %
  % Back up by the size of the box, whether we did a page break or not.
  % Back up by the size of the box, whether we did a page break or not.
  \kern -#1\mil
  \kern -#1\mil
  %
  %
  % Do not allow a page break right after this kern.
  % Do not allow a page break right after this kern.
  \nobreak
  \nobreak
}
}
 
 
% @br   forces paragraph break
% @br   forces paragraph break
 
 
\let\br = \par
\let\br = \par
 
 
% @dots{} output an ellipsis using the current font.
% @dots{} output an ellipsis using the current font.
% We do .5em per period so that it has the same spacing in a typewriter
% We do .5em per period so that it has the same spacing in a typewriter
% font as three actual period characters.
% font as three actual period characters.
%
%
\def\dots{%
\def\dots{%
  \leavevmode
  \leavevmode
  \hbox to 1.5em{%
  \hbox to 1.5em{%
    \hskip 0pt plus 0.25fil minus 0.25fil
    \hskip 0pt plus 0.25fil minus 0.25fil
    .\hss.\hss.%
    .\hss.\hss.%
    \hskip 0pt plus 0.5fil minus 0.5fil
    \hskip 0pt plus 0.5fil minus 0.5fil
  }%
  }%
}
}
 
 
% @enddots{} is an end-of-sentence ellipsis.
% @enddots{} is an end-of-sentence ellipsis.
%
%
\def\enddots{%
\def\enddots{%
  \leavevmode
  \leavevmode
  \hbox to 2em{%
  \hbox to 2em{%
    \hskip 0pt plus 0.25fil minus 0.25fil
    \hskip 0pt plus 0.25fil minus 0.25fil
    .\hss.\hss.\hss.%
    .\hss.\hss.\hss.%
    \hskip 0pt plus 0.5fil minus 0.5fil
    \hskip 0pt plus 0.5fil minus 0.5fil
  }%
  }%
  \spacefactor=3000
  \spacefactor=3000
}
}
 
 
 
 
% @page    forces the start of a new page
% @page    forces the start of a new page
%
%
\def\page{\par\vfill\supereject}
\def\page{\par\vfill\supereject}
 
 
% @exdent text....
% @exdent text....
% outputs text on separate line in roman font, starting at standard page margin
% outputs text on separate line in roman font, starting at standard page margin
 
 
% This records the amount of indent in the innermost environment.
% This records the amount of indent in the innermost environment.
% That's how much \exdent should take out.
% That's how much \exdent should take out.
\newskip\exdentamount
\newskip\exdentamount
 
 
% This defn is used inside fill environments such as @defun.
% This defn is used inside fill environments such as @defun.
\def\exdent{\parsearg\exdentyyy}
\def\exdent{\parsearg\exdentyyy}
\def\exdentyyy #1{{\hfil\break\hbox{\kern -\exdentamount{\rm#1}}\hfil\break}}
\def\exdentyyy #1{{\hfil\break\hbox{\kern -\exdentamount{\rm#1}}\hfil\break}}
 
 
% This defn is used inside nofill environments such as @example.
% This defn is used inside nofill environments such as @example.
\def\nofillexdent{\parsearg\nofillexdentyyy}
\def\nofillexdent{\parsearg\nofillexdentyyy}
\def\nofillexdentyyy #1{{\advance \leftskip by -\exdentamount
\def\nofillexdentyyy #1{{\advance \leftskip by -\exdentamount
\leftline{\hskip\leftskip{\rm#1}}}}
\leftline{\hskip\leftskip{\rm#1}}}}
 
 
% @inmargin{TEXT} puts TEXT in the margin next to the current paragraph.
% @inmargin{TEXT} puts TEXT in the margin next to the current paragraph.
 
 
\def\inmargin#1{%
\def\inmargin#1{%
\strut\vadjust{\nobreak\kern-\strutdepth
\strut\vadjust{\nobreak\kern-\strutdepth
  \vtop to \strutdepth{\baselineskip\strutdepth\vss
  \vtop to \strutdepth{\baselineskip\strutdepth\vss
  \llap{\rightskip=\inmarginspacing \vbox{\noindent #1}}\null}}}
  \llap{\rightskip=\inmarginspacing \vbox{\noindent #1}}\null}}}
\newskip\inmarginspacing \inmarginspacing=1cm
\newskip\inmarginspacing \inmarginspacing=1cm
\def\strutdepth{\dp\strutbox}
\def\strutdepth{\dp\strutbox}
 
 
%\hbox{{\rm#1}}\hfil\break}}
%\hbox{{\rm#1}}\hfil\break}}
 
 
% @include file    insert text of that file as input.
% @include file    insert text of that file as input.
% Allow normal characters that  we make active in the argument (a file name).
% Allow normal characters that  we make active in the argument (a file name).
\def\include{\begingroup
\def\include{\begingroup
  \catcode`\\=12
  \catcode`\\=12
  \catcode`~=12
  \catcode`~=12
  \catcode`^=12
  \catcode`^=12
  \catcode`_=12
  \catcode`_=12
  \catcode`|=12
  \catcode`|=12
  \catcode`<=12
  \catcode`<=12
  \catcode`>=12
  \catcode`>=12
  \catcode`+=12
  \catcode`+=12
  \parsearg\includezzz}
  \parsearg\includezzz}
% Restore active chars for included file.
% Restore active chars for included file.
\def\includezzz#1{\endgroup\begingroup
\def\includezzz#1{\endgroup\begingroup
  % Read the included file in a group so nested @include's work.
  % Read the included file in a group so nested @include's work.
  \def\thisfile{#1}%
  \def\thisfile{#1}%
  \input\thisfile
  \input\thisfile
\endgroup}
\endgroup}
 
 
\def\thisfile{}
\def\thisfile{}
 
 
% @center line   outputs that line, centered
% @center line   outputs that line, centered
 
 
\def\center{\parsearg\centerzzz}
\def\center{\parsearg\centerzzz}
\def\centerzzz #1{{\advance\hsize by -\leftskip
\def\centerzzz #1{{\advance\hsize by -\leftskip
\advance\hsize by -\rightskip
\advance\hsize by -\rightskip
\centerline{#1}}}
\centerline{#1}}}
 
 
% @sp n   outputs n lines of vertical space
% @sp n   outputs n lines of vertical space
 
 
\def\sp{\parsearg\spxxx}
\def\sp{\parsearg\spxxx}
\def\spxxx #1{\vskip #1\baselineskip}
\def\spxxx #1{\vskip #1\baselineskip}
 
 
% @comment ...line which is ignored...
% @comment ...line which is ignored...
% @c is the same as @comment
% @c is the same as @comment
% @ignore ... @end ignore  is another way to write a comment
% @ignore ... @end ignore  is another way to write a comment
 
 
\def\comment{\begingroup \catcode`\^^M=\other%
\def\comment{\begingroup \catcode`\^^M=\other%
\catcode`\@=\other \catcode`\{=\other \catcode`\}=\other%
\catcode`\@=\other \catcode`\{=\other \catcode`\}=\other%
\commentxxx}
\commentxxx}
{\catcode`\^^M=\other \gdef\commentxxx#1^^M{\endgroup}}
{\catcode`\^^M=\other \gdef\commentxxx#1^^M{\endgroup}}
 
 
\let\c=\comment
\let\c=\comment
 
 
% @paragraphindent  is defined for the Info formatting commands only.
% @paragraphindent  is defined for the Info formatting commands only.
\let\paragraphindent=\comment
\let\paragraphindent=\comment
 
 
% Prevent errors for section commands.
% Prevent errors for section commands.
% Used in @ignore and in failing conditionals.
% Used in @ignore and in failing conditionals.
\def\ignoresections{%
\def\ignoresections{%
\let\chapter=\relax
\let\chapter=\relax
\let\unnumbered=\relax
\let\unnumbered=\relax
\let\top=\relax
\let\top=\relax
\let\unnumberedsec=\relax
\let\unnumberedsec=\relax
\let\unnumberedsection=\relax
\let\unnumberedsection=\relax
\let\unnumberedsubsec=\relax
\let\unnumberedsubsec=\relax
\let\unnumberedsubsection=\relax
\let\unnumberedsubsection=\relax
\let\unnumberedsubsubsec=\relax
\let\unnumberedsubsubsec=\relax
\let\unnumberedsubsubsection=\relax
\let\unnumberedsubsubsection=\relax
\let\section=\relax
\let\section=\relax
\let\subsec=\relax
\let\subsec=\relax
\let\subsubsec=\relax
\let\subsubsec=\relax
\let\subsection=\relax
\let\subsection=\relax
\let\subsubsection=\relax
\let\subsubsection=\relax
\let\appendix=\relax
\let\appendix=\relax
\let\appendixsec=\relax
\let\appendixsec=\relax
\let\appendixsection=\relax
\let\appendixsection=\relax
\let\appendixsubsec=\relax
\let\appendixsubsec=\relax
\let\appendixsubsection=\relax
\let\appendixsubsection=\relax
\let\appendixsubsubsec=\relax
\let\appendixsubsubsec=\relax
\let\appendixsubsubsection=\relax
\let\appendixsubsubsection=\relax
\let\contents=\relax
\let\contents=\relax
\let\smallbook=\relax
\let\smallbook=\relax
\let\titlepage=\relax
\let\titlepage=\relax
}
}
 
 
% Used in nested conditionals, where we have to parse the Texinfo source
% Used in nested conditionals, where we have to parse the Texinfo source
% and so want to turn off most commands, in case they are used
% and so want to turn off most commands, in case they are used
% incorrectly.
% incorrectly.
%
%
\def\ignoremorecommands{%
\def\ignoremorecommands{%
  \let\defcodeindex = \relax
  \let\defcodeindex = \relax
  \let\defcv = \relax
  \let\defcv = \relax
  \let\deffn = \relax
  \let\deffn = \relax
  \let\deffnx = \relax
  \let\deffnx = \relax
  \let\defindex = \relax
  \let\defindex = \relax
  \let\defivar = \relax
  \let\defivar = \relax
  \let\defmac = \relax
  \let\defmac = \relax
  \let\defmethod = \relax
  \let\defmethod = \relax
  \let\defop = \relax
  \let\defop = \relax
  \let\defopt = \relax
  \let\defopt = \relax
  \let\defspec = \relax
  \let\defspec = \relax
  \let\deftp = \relax
  \let\deftp = \relax
  \let\deftypefn = \relax
  \let\deftypefn = \relax
  \let\deftypefun = \relax
  \let\deftypefun = \relax
  \let\deftypevar = \relax
  \let\deftypevar = \relax
  \let\deftypevr = \relax
  \let\deftypevr = \relax
  \let\defun = \relax
  \let\defun = \relax
  \let\defvar = \relax
  \let\defvar = \relax
  \let\defvr = \relax
  \let\defvr = \relax
  \let\ref = \relax
  \let\ref = \relax
  \let\xref = \relax
  \let\xref = \relax
  \let\printindex = \relax
  \let\printindex = \relax
  \let\pxref = \relax
  \let\pxref = \relax
  \let\settitle = \relax
  \let\settitle = \relax
  \let\setchapternewpage = \relax
  \let\setchapternewpage = \relax
  \let\setchapterstyle = \relax
  \let\setchapterstyle = \relax
  \let\everyheading = \relax
  \let\everyheading = \relax
  \let\evenheading = \relax
  \let\evenheading = \relax
  \let\oddheading = \relax
  \let\oddheading = \relax
  \let\everyfooting = \relax
  \let\everyfooting = \relax
  \let\evenfooting = \relax
  \let\evenfooting = \relax
  \let\oddfooting = \relax
  \let\oddfooting = \relax
  \let\headings = \relax
  \let\headings = \relax
  \let\include = \relax
  \let\include = \relax
  \let\lowersections = \relax
  \let\lowersections = \relax
  \let\down = \relax
  \let\down = \relax
  \let\raisesections = \relax
  \let\raisesections = \relax
  \let\up = \relax
  \let\up = \relax
  \let\set = \relax
  \let\set = \relax
  \let\clear = \relax
  \let\clear = \relax
  \let\item = \relax
  \let\item = \relax
}
}
 
 
% Ignore @ignore ... @end ignore.
% Ignore @ignore ... @end ignore.
%
%
\def\ignore{\doignore{ignore}}
\def\ignore{\doignore{ignore}}
 
 
% Ignore @ifinfo, @ifhtml, @ifnottex, @html, @menu, and @direntry text.
% Ignore @ifinfo, @ifhtml, @ifnottex, @html, @menu, and @direntry text.
%
%
\def\ifinfo{\doignore{ifinfo}}
\def\ifinfo{\doignore{ifinfo}}
\def\ifhtml{\doignore{ifhtml}}
\def\ifhtml{\doignore{ifhtml}}
\def\ifnottex{\doignore{ifnottex}}
\def\ifnottex{\doignore{ifnottex}}
\def\html{\doignore{html}}
\def\html{\doignore{html}}
\def\menu{\doignore{menu}}
\def\menu{\doignore{menu}}
\def\direntry{\doignore{direntry}}
\def\direntry{\doignore{direntry}}
 
 
% @dircategory CATEGORY  -- specify a category of the dir file
% @dircategory CATEGORY  -- specify a category of the dir file
% which this file should belong to.  Ignore this in TeX.
% which this file should belong to.  Ignore this in TeX.
\let\dircategory = \comment
\let\dircategory = \comment
 
 
% Ignore text until a line `@end #1'.
% Ignore text until a line `@end #1'.
%
%
\def\doignore#1{\begingroup
\def\doignore#1{\begingroup
  % Don't complain about control sequences we have declared \outer.
  % Don't complain about control sequences we have declared \outer.
  \ignoresections
  \ignoresections
  %
  %
  % Define a command to swallow text until we reach `@end #1'.
  % Define a command to swallow text until we reach `@end #1'.
  % This @ is a catcode 12 token (that is the normal catcode of @ in
  % This @ is a catcode 12 token (that is the normal catcode of @ in
  % this texinfo.tex file).  We change the catcode of @ below to match.
  % this texinfo.tex file).  We change the catcode of @ below to match.
  \long\def\doignoretext##1@end #1{\enddoignore}%
  \long\def\doignoretext##1@end #1{\enddoignore}%
  %
  %
  % Make sure that spaces turn into tokens that match what \doignoretext wants.
  % Make sure that spaces turn into tokens that match what \doignoretext wants.
  \catcode32 = 10
  \catcode32 = 10
  %
  %
  % Ignore braces, too, so mismatched braces don't cause trouble.
  % Ignore braces, too, so mismatched braces don't cause trouble.
  \catcode`\{ = 9
  \catcode`\{ = 9
  \catcode`\} = 9
  \catcode`\} = 9
  %
  %
  % We must not have @c interpreted as a control sequence.
  % We must not have @c interpreted as a control sequence.
  \catcode`\@ = 12
  \catcode`\@ = 12
  %
  %
  % Make the letter c a comment character so that the rest of the line
  % Make the letter c a comment character so that the rest of the line
  % will be ignored. This way, the document can have (for example)
  % will be ignored. This way, the document can have (for example)
  %   @c @end ifinfo
  %   @c @end ifinfo
  % and the @end ifinfo will be properly ignored.
  % and the @end ifinfo will be properly ignored.
  % (We've just changed @ to catcode 12.)
  % (We've just changed @ to catcode 12.)
  \catcode`\c = 14
  \catcode`\c = 14
  %
  %
  % And now expand that command.
  % And now expand that command.
  \doignoretext
  \doignoretext
}
}
 
 
% What we do to finish off ignored text.
% What we do to finish off ignored text.
%
%
\def\enddoignore{\endgroup\ignorespaces}%
\def\enddoignore{\endgroup\ignorespaces}%
 
 
\newif\ifwarnedobs\warnedobsfalse
\newif\ifwarnedobs\warnedobsfalse
\def\obstexwarn{%
\def\obstexwarn{%
  \ifwarnedobs\relax\else
  \ifwarnedobs\relax\else
  % We need to warn folks that they may have trouble with TeX 3.0.
  % We need to warn folks that they may have trouble with TeX 3.0.
  % This uses \immediate\write16 rather than \message to get newlines.
  % This uses \immediate\write16 rather than \message to get newlines.
    \immediate\write16{}
    \immediate\write16{}
    \immediate\write16{***WARNING*** for users of Unix TeX 3.0!}
    \immediate\write16{***WARNING*** for users of Unix TeX 3.0!}
    \immediate\write16{This manual trips a bug in TeX version 3.0 (tex hangs).}
    \immediate\write16{This manual trips a bug in TeX version 3.0 (tex hangs).}
    \immediate\write16{If you are running another version of TeX, relax.}
    \immediate\write16{If you are running another version of TeX, relax.}
    \immediate\write16{If you are running Unix TeX 3.0, kill this TeX process.}
    \immediate\write16{If you are running Unix TeX 3.0, kill this TeX process.}
    \immediate\write16{  Then upgrade your TeX installation if you can.}
    \immediate\write16{  Then upgrade your TeX installation if you can.}
    \immediate\write16{  (See ftp://ftp.gnu.ai.mit.edu/pub/gnu/TeX.README.)}
    \immediate\write16{  (See ftp://ftp.gnu.ai.mit.edu/pub/gnu/TeX.README.)}
    \immediate\write16{If you are stuck with version 3.0, run the}
    \immediate\write16{If you are stuck with version 3.0, run the}
    \immediate\write16{  script ``tex3patch'' from the Texinfo distribution}
    \immediate\write16{  script ``tex3patch'' from the Texinfo distribution}
    \immediate\write16{  to use a workaround.}
    \immediate\write16{  to use a workaround.}
    \immediate\write16{}
    \immediate\write16{}
    \global\warnedobstrue
    \global\warnedobstrue
    \fi
    \fi
}
}
 
 
% **In TeX 3.0, setting text in \nullfont hangs tex.  For a
% **In TeX 3.0, setting text in \nullfont hangs tex.  For a
% workaround (which requires the file ``dummy.tfm'' to be installed),
% workaround (which requires the file ``dummy.tfm'' to be installed),
% uncomment the following line:
% uncomment the following line:
%%%%%\font\nullfont=dummy\let\obstexwarn=\relax
%%%%%\font\nullfont=dummy\let\obstexwarn=\relax
 
 
% Ignore text, except that we keep track of conditional commands for
% Ignore text, except that we keep track of conditional commands for
% purposes of nesting, up to an `@end #1' command.
% purposes of nesting, up to an `@end #1' command.
%
%
\def\nestedignore#1{%
\def\nestedignore#1{%
  \obstexwarn
  \obstexwarn
  % We must actually expand the ignored text to look for the @end
  % We must actually expand the ignored text to look for the @end
  % command, so that nested ignore constructs work.  Thus, we put the
  % command, so that nested ignore constructs work.  Thus, we put the
  % text into a \vbox and then do nothing with the result.  To minimize
  % text into a \vbox and then do nothing with the result.  To minimize
  % the change of memory overflow, we follow the approach outlined on
  % the change of memory overflow, we follow the approach outlined on
  % page 401 of the TeXbook: make the current font be a dummy font.
  % page 401 of the TeXbook: make the current font be a dummy font.
  %
  %
  \setbox0 = \vbox\bgroup
  \setbox0 = \vbox\bgroup
    % Don't complain about control sequences we have declared \outer.
    % Don't complain about control sequences we have declared \outer.
    \ignoresections
    \ignoresections
    %
    %
    % Define `@end #1' to end the box, which will in turn undefine the
    % Define `@end #1' to end the box, which will in turn undefine the
    % @end command again.
    % @end command again.
    \expandafter\def\csname E#1\endcsname{\egroup\ignorespaces}%
    \expandafter\def\csname E#1\endcsname{\egroup\ignorespaces}%
    %
    %
    % We are going to be parsing Texinfo commands.  Most cause no
    % We are going to be parsing Texinfo commands.  Most cause no
    % trouble when they are used incorrectly, but some commands do
    % trouble when they are used incorrectly, but some commands do
    % complicated argument parsing or otherwise get confused, so we
    % complicated argument parsing or otherwise get confused, so we
    % undefine them.
    % undefine them.
    %
    %
    % We can't do anything about stray @-signs, unfortunately;
    % We can't do anything about stray @-signs, unfortunately;
    % they'll produce `undefined control sequence' errors.
    % they'll produce `undefined control sequence' errors.
    \ignoremorecommands
    \ignoremorecommands
    %
    %
    % Set the current font to be \nullfont, a TeX primitive, and define
    % Set the current font to be \nullfont, a TeX primitive, and define
    % all the font commands to also use \nullfont.  We don't use
    % all the font commands to also use \nullfont.  We don't use
    % dummy.tfm, as suggested in the TeXbook, because not all sites
    % dummy.tfm, as suggested in the TeXbook, because not all sites
    % might have that installed.  Therefore, math mode will still
    % might have that installed.  Therefore, math mode will still
    % produce output, but that should be an extremely small amount of
    % produce output, but that should be an extremely small amount of
    % stuff compared to the main input.
    % stuff compared to the main input.
    %
    %
    \nullfont
    \nullfont
    \let\tenrm = \nullfont  \let\tenit = \nullfont  \let\tensl = \nullfont
    \let\tenrm = \nullfont  \let\tenit = \nullfont  \let\tensl = \nullfont
    \let\tenbf = \nullfont  \let\tentt = \nullfont  \let\smallcaps = \nullfont
    \let\tenbf = \nullfont  \let\tentt = \nullfont  \let\smallcaps = \nullfont
    \let\tensf = \nullfont
    \let\tensf = \nullfont
    % Similarly for index fonts (mostly for their use in
    % Similarly for index fonts (mostly for their use in
    % smallexample)
    % smallexample)
    \let\indrm = \nullfont  \let\indit = \nullfont  \let\indsl = \nullfont
    \let\indrm = \nullfont  \let\indit = \nullfont  \let\indsl = \nullfont
    \let\indbf = \nullfont  \let\indtt = \nullfont  \let\indsc = \nullfont
    \let\indbf = \nullfont  \let\indtt = \nullfont  \let\indsc = \nullfont
    \let\indsf = \nullfont
    \let\indsf = \nullfont
    %
    %
    % Don't complain when characters are missing from the fonts.
    % Don't complain when characters are missing from the fonts.
    \tracinglostchars = 0
    \tracinglostchars = 0
    %
    %
    % Don't bother to do space factor calculations.
    % Don't bother to do space factor calculations.
    \frenchspacing
    \frenchspacing
    %
    %
    % Don't report underfull hboxes.
    % Don't report underfull hboxes.
    \hbadness = 10000
    \hbadness = 10000
    %
    %
    % Do minimal line-breaking.
    % Do minimal line-breaking.
    \pretolerance = 10000
    \pretolerance = 10000
    %
    %
    % Do not execute instructions in @tex
    % Do not execute instructions in @tex
    \def\tex{\doignore{tex}}%
    \def\tex{\doignore{tex}}%
    % Do not execute macro definitions.
    % Do not execute macro definitions.
    % `c' is a comment character, so the word `macro' will get cut off.
    % `c' is a comment character, so the word `macro' will get cut off.
    \def\macro{\doignore{ma}}%
    \def\macro{\doignore{ma}}%
}
}
 
 
% @set VAR sets the variable VAR to an empty value.
% @set VAR sets the variable VAR to an empty value.
% @set VAR REST-OF-LINE sets VAR to the value REST-OF-LINE.
% @set VAR REST-OF-LINE sets VAR to the value REST-OF-LINE.
%
%
% Since we want to separate VAR from REST-OF-LINE (which might be
% Since we want to separate VAR from REST-OF-LINE (which might be
% empty), we can't just use \parsearg; we have to insert a space of our
% empty), we can't just use \parsearg; we have to insert a space of our
% own to delimit the rest of the line, and then take it out again if we
% own to delimit the rest of the line, and then take it out again if we
% didn't need it.  Make sure the catcode of space is correct to avoid
% didn't need it.  Make sure the catcode of space is correct to avoid
% losing inside @example, for instance.
% losing inside @example, for instance.
%
%
\def\set{\begingroup\catcode` =10
\def\set{\begingroup\catcode` =10
  \catcode`\-=12 \catcode`\_=12 % Allow - and _ in VAR.
  \catcode`\-=12 \catcode`\_=12 % Allow - and _ in VAR.
  \parsearg\setxxx}
  \parsearg\setxxx}
\def\setxxx#1{\setyyy#1 \endsetyyy}
\def\setxxx#1{\setyyy#1 \endsetyyy}
\def\setyyy#1 #2\endsetyyy{%
\def\setyyy#1 #2\endsetyyy{%
  \def\temp{#2}%
  \def\temp{#2}%
  \ifx\temp\empty \global\expandafter\let\csname SET#1\endcsname = \empty
  \ifx\temp\empty \global\expandafter\let\csname SET#1\endcsname = \empty
  \else \setzzz{#1}#2\endsetzzz % Remove the trailing space \setxxx inserted.
  \else \setzzz{#1}#2\endsetzzz % Remove the trailing space \setxxx inserted.
  \fi
  \fi
  \endgroup
  \endgroup
}
}
% Can't use \xdef to pre-expand #2 and save some time, since \temp or
% Can't use \xdef to pre-expand #2 and save some time, since \temp or
% \next or other control sequences that we've defined might get us into
% \next or other control sequences that we've defined might get us into
% an infinite loop. Consider `@set foo @cite{bar}'.
% an infinite loop. Consider `@set foo @cite{bar}'.
\def\setzzz#1#2 \endsetzzz{\expandafter\gdef\csname SET#1\endcsname{#2}}
\def\setzzz#1#2 \endsetzzz{\expandafter\gdef\csname SET#1\endcsname{#2}}
 
 
% @clear VAR clears (i.e., unsets) the variable VAR.
% @clear VAR clears (i.e., unsets) the variable VAR.
%
%
\def\clear{\parsearg\clearxxx}
\def\clear{\parsearg\clearxxx}
\def\clearxxx#1{\global\expandafter\let\csname SET#1\endcsname=\relax}
\def\clearxxx#1{\global\expandafter\let\csname SET#1\endcsname=\relax}
 
 
% @value{foo} gets the text saved in variable foo.
% @value{foo} gets the text saved in variable foo.
%
%
{
{
  \catcode`\_ = \active
  \catcode`\_ = \active
  %
  %
  % We might end up with active _ or - characters in the argument if
  % We might end up with active _ or - characters in the argument if
  % we're called from @code, as @code{@value{foo-bar_}}.  So \let any
  % we're called from @code, as @code{@value{foo-bar_}}.  So \let any
  % such active characters to their normal equivalents.
  % such active characters to their normal equivalents.
  \gdef\value{\begingroup
  \gdef\value{\begingroup
    \catcode`\-=12 \catcode`\_=12
    \catcode`\-=12 \catcode`\_=12
    \indexbreaks \let_\normalunderscore
    \indexbreaks \let_\normalunderscore
    \valuexxx}
    \valuexxx}
}
}
\def\valuexxx#1{\expandablevalue{#1}\endgroup}
\def\valuexxx#1{\expandablevalue{#1}\endgroup}
 
 
% We have this subroutine so that we can handle at least some @value's
% We have this subroutine so that we can handle at least some @value's
% properly in indexes (we \let\value to this in \indexdummies).  Ones
% properly in indexes (we \let\value to this in \indexdummies).  Ones
% whose names contain - or _ still won't work, but we can't do anything
% whose names contain - or _ still won't work, but we can't do anything
% about that.  The command has to be fully expandable, since the result
% about that.  The command has to be fully expandable, since the result
% winds up in the index file.  This means that if the variable's value
% winds up in the index file.  This means that if the variable's value
% contains other Texinfo commands, it's almost certain it will fail
% contains other Texinfo commands, it's almost certain it will fail
% (although perhaps we could fix that with sufficient work to do a
% (although perhaps we could fix that with sufficient work to do a
% one-level expansion on the result, instead of complete).
% one-level expansion on the result, instead of complete).
%
%
\def\expandablevalue#1{%
\def\expandablevalue#1{%
  \expandafter\ifx\csname SET#1\endcsname\relax
  \expandafter\ifx\csname SET#1\endcsname\relax
    {[No value for ``#1'']v}%
    {[No value for ``#1'']v}%
  \else
  \else
    \csname SET#1\endcsname
    \csname SET#1\endcsname
  \fi
  \fi
}
}
 
 
% @ifset VAR ... @end ifset reads the `...' iff VAR has been defined
% @ifset VAR ... @end ifset reads the `...' iff VAR has been defined
% with @set.
% with @set.
%
%
\def\ifset{\parsearg\ifsetxxx}
\def\ifset{\parsearg\ifsetxxx}
\def\ifsetxxx #1{%
\def\ifsetxxx #1{%
  \expandafter\ifx\csname SET#1\endcsname\relax
  \expandafter\ifx\csname SET#1\endcsname\relax
    \expandafter\ifsetfail
    \expandafter\ifsetfail
  \else
  \else
    \expandafter\ifsetsucceed
    \expandafter\ifsetsucceed
  \fi
  \fi
}
}
\def\ifsetsucceed{\conditionalsucceed{ifset}}
\def\ifsetsucceed{\conditionalsucceed{ifset}}
\def\ifsetfail{\nestedignore{ifset}}
\def\ifsetfail{\nestedignore{ifset}}
\defineunmatchedend{ifset}
\defineunmatchedend{ifset}
 
 
% @ifclear VAR ... @end ifclear reads the `...' iff VAR has never been
% @ifclear VAR ... @end ifclear reads the `...' iff VAR has never been
% defined with @set, or has been undefined with @clear.
% defined with @set, or has been undefined with @clear.
%
%
\def\ifclear{\parsearg\ifclearxxx}
\def\ifclear{\parsearg\ifclearxxx}
\def\ifclearxxx #1{%
\def\ifclearxxx #1{%
  \expandafter\ifx\csname SET#1\endcsname\relax
  \expandafter\ifx\csname SET#1\endcsname\relax
    \expandafter\ifclearsucceed
    \expandafter\ifclearsucceed
  \else
  \else
    \expandafter\ifclearfail
    \expandafter\ifclearfail
  \fi
  \fi
}
}
\def\ifclearsucceed{\conditionalsucceed{ifclear}}
\def\ifclearsucceed{\conditionalsucceed{ifclear}}
\def\ifclearfail{\nestedignore{ifclear}}
\def\ifclearfail{\nestedignore{ifclear}}
\defineunmatchedend{ifclear}
\defineunmatchedend{ifclear}
 
 
% @iftex, @ifnothtml, @ifnotinfo always succeed; we read the text
% @iftex, @ifnothtml, @ifnotinfo always succeed; we read the text
% following, through the first @end iftex (etc.).  Make `@end iftex'
% following, through the first @end iftex (etc.).  Make `@end iftex'
% (etc.) valid only after an @iftex.
% (etc.) valid only after an @iftex.
%
%
\def\iftex{\conditionalsucceed{iftex}}
\def\iftex{\conditionalsucceed{iftex}}
\def\ifnothtml{\conditionalsucceed{ifnothtml}}
\def\ifnothtml{\conditionalsucceed{ifnothtml}}
\def\ifnotinfo{\conditionalsucceed{ifnotinfo}}
\def\ifnotinfo{\conditionalsucceed{ifnotinfo}}
\defineunmatchedend{iftex}
\defineunmatchedend{iftex}
\defineunmatchedend{ifnothtml}
\defineunmatchedend{ifnothtml}
\defineunmatchedend{ifnotinfo}
\defineunmatchedend{ifnotinfo}
 
 
% We can't just want to start a group at @iftex (for example) and end it
% We can't just want to start a group at @iftex (for example) and end it
% at @end iftex, since then @set commands inside the conditional have no
% at @end iftex, since then @set commands inside the conditional have no
% effect (they'd get reverted at the end of the group).  So we must
% effect (they'd get reverted at the end of the group).  So we must
% define \Eiftex to redefine itself to be its previous value.  (We can't
% define \Eiftex to redefine itself to be its previous value.  (We can't
% just define it to fail again with an ``unmatched end'' error, since
% just define it to fail again with an ``unmatched end'' error, since
% the @ifset might be nested.)
% the @ifset might be nested.)
%
%
\def\conditionalsucceed#1{%
\def\conditionalsucceed#1{%
  \edef\temp{%
  \edef\temp{%
    % Remember the current value of \E#1.
    % Remember the current value of \E#1.
    \let\nece{prevE#1} = \nece{E#1}%
    \let\nece{prevE#1} = \nece{E#1}%
    %
    %
    % At the `@end #1', redefine \E#1 to be its previous value.
    % At the `@end #1', redefine \E#1 to be its previous value.
    \def\nece{E#1}{\let\nece{E#1} = \nece{prevE#1}}%
    \def\nece{E#1}{\let\nece{E#1} = \nece{prevE#1}}%
  }%
  }%
  \temp
  \temp
}
}
 
 
% We need to expand lots of \csname's, but we don't want to expand the
% We need to expand lots of \csname's, but we don't want to expand the
% control sequences after we've constructed them.
% control sequences after we've constructed them.
%
%
\def\nece#1{\expandafter\noexpand\csname#1\endcsname}
\def\nece#1{\expandafter\noexpand\csname#1\endcsname}
 
 
% @asis just yields its argument.  Used with @table, for example.
% @asis just yields its argument.  Used with @table, for example.
%
%
\def\asis#1{#1}
\def\asis#1{#1}
 
 
% @math means output in math mode.
% @math means output in math mode.
% We don't use $'s directly in the definition of \math because control
% We don't use $'s directly in the definition of \math because control
% sequences like \math are expanded when the toc file is written.  Then,
% sequences like \math are expanded when the toc file is written.  Then,
% we read the toc file back, the $'s will be normal characters (as they
% we read the toc file back, the $'s will be normal characters (as they
% should be, according to the definition of Texinfo).  So we must use a
% should be, according to the definition of Texinfo).  So we must use a
% control sequence to switch into and out of math mode.
% control sequence to switch into and out of math mode.
%
%
% This isn't quite enough for @math to work properly in indices, but it
% This isn't quite enough for @math to work properly in indices, but it
% seems unlikely it will ever be needed there.
% seems unlikely it will ever be needed there.
%
%
\let\implicitmath = $
\let\implicitmath = $
\def\math#1{\implicitmath #1\implicitmath}
\def\math#1{\implicitmath #1\implicitmath}
 
 
% @bullet and @minus need the same treatment as @math, just above.
% @bullet and @minus need the same treatment as @math, just above.
\def\bullet{\implicitmath\ptexbullet\implicitmath}
\def\bullet{\implicitmath\ptexbullet\implicitmath}
\def\minus{\implicitmath-\implicitmath}
\def\minus{\implicitmath-\implicitmath}
 
 
% @refill is a no-op.
% @refill is a no-op.
\let\refill=\relax
\let\refill=\relax
 
 
% If working on a large document in chapters, it is convenient to
% If working on a large document in chapters, it is convenient to
% be able to disable indexing, cross-referencing, and contents, for test runs.
% be able to disable indexing, cross-referencing, and contents, for test runs.
% This is done with @novalidate (before @setfilename).
% This is done with @novalidate (before @setfilename).
%
%
\newif\iflinks \linkstrue % by default we want the aux files.
\newif\iflinks \linkstrue % by default we want the aux files.
\let\novalidate = \linksfalse
\let\novalidate = \linksfalse
 
 
% @setfilename is done at the beginning of every texinfo file.
% @setfilename is done at the beginning of every texinfo file.
% So open here the files we need to have open while reading the input.
% So open here the files we need to have open while reading the input.
% This makes it possible to make a .fmt file for texinfo.
% This makes it possible to make a .fmt file for texinfo.
\def\setfilename{%
\def\setfilename{%
   \iflinks
   \iflinks
     \readauxfile
     \readauxfile
   \fi % \openindices needs to do some work in any case.
   \fi % \openindices needs to do some work in any case.
   \openindices
   \openindices
   \fixbackslash  % Turn off hack to swallow `\input texinfo'.
   \fixbackslash  % Turn off hack to swallow `\input texinfo'.
   \global\let\setfilename=\comment % Ignore extra @setfilename cmds.
   \global\let\setfilename=\comment % Ignore extra @setfilename cmds.
   %
   %
   % If texinfo.cnf is present on the system, read it.
   % If texinfo.cnf is present on the system, read it.
   % Useful for site-wide @afourpaper, etc.
   % Useful for site-wide @afourpaper, etc.
   % Just to be on the safe side, close the input stream before the \input.
   % Just to be on the safe side, close the input stream before the \input.
   \openin 1 texinfo.cnf
   \openin 1 texinfo.cnf
   \ifeof1 \let\temp=\relax \else \def\temp{\input texinfo.cnf }\fi
   \ifeof1 \let\temp=\relax \else \def\temp{\input texinfo.cnf }\fi
   \closein1
   \closein1
   \temp
   \temp
   %
   %
   \comment % Ignore the actual filename.
   \comment % Ignore the actual filename.
}
}
 
 
% Called from \setfilename.
% Called from \setfilename.
%
%
\def\openindices{%
\def\openindices{%
  \newindex{cp}%
  \newindex{cp}%
  \newcodeindex{fn}%
  \newcodeindex{fn}%
  \newcodeindex{vr}%
  \newcodeindex{vr}%
  \newcodeindex{tp}%
  \newcodeindex{tp}%
  \newcodeindex{ky}%
  \newcodeindex{ky}%
  \newcodeindex{pg}%
  \newcodeindex{pg}%
}
}
 
 
% @bye.
% @bye.
\outer\def\bye{\pagealignmacro\tracingstats=1\ptexend}
\outer\def\bye{\pagealignmacro\tracingstats=1\ptexend}
 
 
 
 
\message{fonts,}
\message{fonts,}
% Font-change commands.
% Font-change commands.
 
 
% Texinfo sort of supports the sans serif font style, which plain TeX does not.
% Texinfo sort of supports the sans serif font style, which plain TeX does not.
% So we set up a \sf analogous to plain's \rm, etc.
% So we set up a \sf analogous to plain's \rm, etc.
\newfam\sffam
\newfam\sffam
\def\sf{\fam=\sffam \tensf}
\def\sf{\fam=\sffam \tensf}
\let\li = \sf % Sometimes we call it \li, not \sf.
\let\li = \sf % Sometimes we call it \li, not \sf.
 
 
% We don't need math for this one.
% We don't need math for this one.
\def\ttsl{\tenttsl}
\def\ttsl{\tenttsl}
 
 
% Use Computer Modern fonts at \magstephalf (11pt).
% Use Computer Modern fonts at \magstephalf (11pt).
\newcount\mainmagstep
\newcount\mainmagstep
\mainmagstep=\magstephalf
\mainmagstep=\magstephalf
 
 
% Set the font macro #1 to the font named #2, adding on the
% Set the font macro #1 to the font named #2, adding on the
% specified font prefix (normally `cm').
% specified font prefix (normally `cm').
% #3 is the font's design size, #4 is a scale factor
% #3 is the font's design size, #4 is a scale factor
\def\setfont#1#2#3#4{\font#1=\fontprefix#2#3 scaled #4}
\def\setfont#1#2#3#4{\font#1=\fontprefix#2#3 scaled #4}
 
 
% Use cm as the default font prefix.
% Use cm as the default font prefix.
% To specify the font prefix, you must define \fontprefix
% To specify the font prefix, you must define \fontprefix
% before you read in texinfo.tex.
% before you read in texinfo.tex.
\ifx\fontprefix\undefined
\ifx\fontprefix\undefined
\def\fontprefix{cm}
\def\fontprefix{cm}
\fi
\fi
% Support font families that don't use the same naming scheme as CM.
% Support font families that don't use the same naming scheme as CM.
\def\rmshape{r}
\def\rmshape{r}
\def\rmbshape{bx}               %where the normal face is bold
\def\rmbshape{bx}               %where the normal face is bold
\def\bfshape{b}
\def\bfshape{b}
\def\bxshape{bx}
\def\bxshape{bx}
\def\ttshape{tt}
\def\ttshape{tt}
\def\ttbshape{tt}
\def\ttbshape{tt}
\def\ttslshape{sltt}
\def\ttslshape{sltt}
\def\itshape{ti}
\def\itshape{ti}
\def\itbshape{bxti}
\def\itbshape{bxti}
\def\slshape{sl}
\def\slshape{sl}
\def\slbshape{bxsl}
\def\slbshape{bxsl}
\def\sfshape{ss}
\def\sfshape{ss}
\def\sfbshape{ss}
\def\sfbshape{ss}
\def\scshape{csc}
\def\scshape{csc}
\def\scbshape{csc}
\def\scbshape{csc}
 
 
\ifx\bigger\relax
\ifx\bigger\relax
\let\mainmagstep=\magstep1
\let\mainmagstep=\magstep1
\setfont\textrm\rmshape{12}{1000}
\setfont\textrm\rmshape{12}{1000}
\setfont\texttt\ttshape{12}{1000}
\setfont\texttt\ttshape{12}{1000}
\else
\else
\setfont\textrm\rmshape{10}{\mainmagstep}
\setfont\textrm\rmshape{10}{\mainmagstep}
\setfont\texttt\ttshape{10}{\mainmagstep}
\setfont\texttt\ttshape{10}{\mainmagstep}
\fi
\fi
% Instead of cmb10, you many want to use cmbx10.
% Instead of cmb10, you many want to use cmbx10.
% cmbx10 is a prettier font on its own, but cmb10
% cmbx10 is a prettier font on its own, but cmb10
% looks better when embedded in a line with cmr10.
% looks better when embedded in a line with cmr10.
\setfont\textbf\bfshape{10}{\mainmagstep}
\setfont\textbf\bfshape{10}{\mainmagstep}
\setfont\textit\itshape{10}{\mainmagstep}
\setfont\textit\itshape{10}{\mainmagstep}
\setfont\textsl\slshape{10}{\mainmagstep}
\setfont\textsl\slshape{10}{\mainmagstep}
\setfont\textsf\sfshape{10}{\mainmagstep}
\setfont\textsf\sfshape{10}{\mainmagstep}
\setfont\textsc\scshape{10}{\mainmagstep}
\setfont\textsc\scshape{10}{\mainmagstep}
\setfont\textttsl\ttslshape{10}{\mainmagstep}
\setfont\textttsl\ttslshape{10}{\mainmagstep}
\font\texti=cmmi10 scaled \mainmagstep
\font\texti=cmmi10 scaled \mainmagstep
\font\textsy=cmsy10 scaled \mainmagstep
\font\textsy=cmsy10 scaled \mainmagstep
 
 
% A few fonts for @defun, etc.
% A few fonts for @defun, etc.
\setfont\defbf\bxshape{10}{\magstep1} %was 1314
\setfont\defbf\bxshape{10}{\magstep1} %was 1314
\setfont\deftt\ttshape{10}{\magstep1}
\setfont\deftt\ttshape{10}{\magstep1}
\def\df{\let\tentt=\deftt \let\tenbf = \defbf \bf}
\def\df{\let\tentt=\deftt \let\tenbf = \defbf \bf}
 
 
% Fonts for indices and small examples (9pt).
% Fonts for indices and small examples (9pt).
% We actually use the slanted font rather than the italic,
% We actually use the slanted font rather than the italic,
% because texinfo normally uses the slanted fonts for that.
% because texinfo normally uses the slanted fonts for that.
% Do not make many font distinctions in general in the index, since they
% Do not make many font distinctions in general in the index, since they
% aren't very useful.
% aren't very useful.
\setfont\ninett\ttshape{9}{1000}
\setfont\ninett\ttshape{9}{1000}
\setfont\ninettsl\ttslshape{10}{900}
\setfont\ninettsl\ttslshape{10}{900}
\setfont\indrm\rmshape{9}{1000}
\setfont\indrm\rmshape{9}{1000}
\setfont\indit\itshape{9}{1000}
\setfont\indit\itshape{9}{1000}
\setfont\indsl\slshape{9}{1000}
\setfont\indsl\slshape{9}{1000}
\let\indtt=\ninett
\let\indtt=\ninett
\let\indttsl=\ninettsl
\let\indttsl=\ninettsl
\let\indsf=\indrm
\let\indsf=\indrm
\let\indbf=\indrm
\let\indbf=\indrm
\setfont\indsc\scshape{10}{900}
\setfont\indsc\scshape{10}{900}
\font\indi=cmmi9
\font\indi=cmmi9
\font\indsy=cmsy9
\font\indsy=cmsy9
 
 
% Fonts for title page:
% Fonts for title page:
\setfont\titlerm\rmbshape{12}{\magstep3}
\setfont\titlerm\rmbshape{12}{\magstep3}
\setfont\titleit\itbshape{10}{\magstep4}
\setfont\titleit\itbshape{10}{\magstep4}
\setfont\titlesl\slbshape{10}{\magstep4}
\setfont\titlesl\slbshape{10}{\magstep4}
\setfont\titlett\ttbshape{12}{\magstep3}
\setfont\titlett\ttbshape{12}{\magstep3}
\setfont\titlettsl\ttslshape{10}{\magstep4}
\setfont\titlettsl\ttslshape{10}{\magstep4}
\setfont\titlesf\sfbshape{17}{\magstep1}
\setfont\titlesf\sfbshape{17}{\magstep1}
\let\titlebf=\titlerm
\let\titlebf=\titlerm
\setfont\titlesc\scbshape{10}{\magstep4}
\setfont\titlesc\scbshape{10}{\magstep4}
\font\titlei=cmmi12 scaled \magstep3
\font\titlei=cmmi12 scaled \magstep3
\font\titlesy=cmsy10 scaled \magstep4
\font\titlesy=cmsy10 scaled \magstep4
\def\authorrm{\secrm}
\def\authorrm{\secrm}
 
 
% Chapter (and unnumbered) fonts (17.28pt).
% Chapter (and unnumbered) fonts (17.28pt).
\setfont\chaprm\rmbshape{12}{\magstep2}
\setfont\chaprm\rmbshape{12}{\magstep2}
\setfont\chapit\itbshape{10}{\magstep3}
\setfont\chapit\itbshape{10}{\magstep3}
\setfont\chapsl\slbshape{10}{\magstep3}
\setfont\chapsl\slbshape{10}{\magstep3}
\setfont\chaptt\ttbshape{12}{\magstep2}
\setfont\chaptt\ttbshape{12}{\magstep2}
\setfont\chapttsl\ttslshape{10}{\magstep3}
\setfont\chapttsl\ttslshape{10}{\magstep3}
\setfont\chapsf\sfbshape{17}{1000}
\setfont\chapsf\sfbshape{17}{1000}
\let\chapbf=\chaprm
\let\chapbf=\chaprm
\setfont\chapsc\scbshape{10}{\magstep3}
\setfont\chapsc\scbshape{10}{\magstep3}
\font\chapi=cmmi12 scaled \magstep2
\font\chapi=cmmi12 scaled \magstep2
\font\chapsy=cmsy10 scaled \magstep3
\font\chapsy=cmsy10 scaled \magstep3
 
 
% Section fonts (14.4pt).
% Section fonts (14.4pt).
\setfont\secrm\rmbshape{12}{\magstep1}
\setfont\secrm\rmbshape{12}{\magstep1}
\setfont\secit\itbshape{10}{\magstep2}
\setfont\secit\itbshape{10}{\magstep2}
\setfont\secsl\slbshape{10}{\magstep2}
\setfont\secsl\slbshape{10}{\magstep2}
\setfont\sectt\ttbshape{12}{\magstep1}
\setfont\sectt\ttbshape{12}{\magstep1}
\setfont\secttsl\ttslshape{10}{\magstep2}
\setfont\secttsl\ttslshape{10}{\magstep2}
\setfont\secsf\sfbshape{12}{\magstep1}
\setfont\secsf\sfbshape{12}{\magstep1}
\let\secbf\secrm
\let\secbf\secrm
\setfont\secsc\scbshape{10}{\magstep2}
\setfont\secsc\scbshape{10}{\magstep2}
\font\seci=cmmi12 scaled \magstep1
\font\seci=cmmi12 scaled \magstep1
\font\secsy=cmsy10 scaled \magstep2
\font\secsy=cmsy10 scaled \magstep2
 
 
% \setfont\ssecrm\bxshape{10}{\magstep1}    % This size an font looked bad.
% \setfont\ssecrm\bxshape{10}{\magstep1}    % This size an font looked bad.
% \setfont\ssecit\itshape{10}{\magstep1}    % The letters were too crowded.
% \setfont\ssecit\itshape{10}{\magstep1}    % The letters were too crowded.
% \setfont\ssecsl\slshape{10}{\magstep1}
% \setfont\ssecsl\slshape{10}{\magstep1}
% \setfont\ssectt\ttshape{10}{\magstep1}
% \setfont\ssectt\ttshape{10}{\magstep1}
% \setfont\ssecsf\sfshape{10}{\magstep1}
% \setfont\ssecsf\sfshape{10}{\magstep1}
 
 
%\setfont\ssecrm\bfshape{10}{1315}      % Note the use of cmb rather than cmbx.
%\setfont\ssecrm\bfshape{10}{1315}      % Note the use of cmb rather than cmbx.
%\setfont\ssecit\itshape{10}{1315}      % Also, the size is a little larger than
%\setfont\ssecit\itshape{10}{1315}      % Also, the size is a little larger than
%\setfont\ssecsl\slshape{10}{1315}      % being scaled magstep1.
%\setfont\ssecsl\slshape{10}{1315}      % being scaled magstep1.
%\setfont\ssectt\ttshape{10}{1315}
%\setfont\ssectt\ttshape{10}{1315}
%\setfont\ssecsf\sfshape{10}{1315}
%\setfont\ssecsf\sfshape{10}{1315}
 
 
%\let\ssecbf=\ssecrm
%\let\ssecbf=\ssecrm
 
 
% Subsection fonts (13.15pt).
% Subsection fonts (13.15pt).
\setfont\ssecrm\rmbshape{12}{\magstephalf}
\setfont\ssecrm\rmbshape{12}{\magstephalf}
\setfont\ssecit\itbshape{10}{1315}
\setfont\ssecit\itbshape{10}{1315}
\setfont\ssecsl\slbshape{10}{1315}
\setfont\ssecsl\slbshape{10}{1315}
\setfont\ssectt\ttbshape{12}{\magstephalf}
\setfont\ssectt\ttbshape{12}{\magstephalf}
\setfont\ssecttsl\ttslshape{10}{1315}
\setfont\ssecttsl\ttslshape{10}{1315}
\setfont\ssecsf\sfbshape{12}{\magstephalf}
\setfont\ssecsf\sfbshape{12}{\magstephalf}
\let\ssecbf\ssecrm
\let\ssecbf\ssecrm
\setfont\ssecsc\scbshape{10}{\magstep1}
\setfont\ssecsc\scbshape{10}{\magstep1}
\font\sseci=cmmi12 scaled \magstephalf
\font\sseci=cmmi12 scaled \magstephalf
\font\ssecsy=cmsy10 scaled 1315
\font\ssecsy=cmsy10 scaled 1315
% The smallcaps and symbol fonts should actually be scaled \magstep1.5,
% The smallcaps and symbol fonts should actually be scaled \magstep1.5,
% but that is not a standard magnification.
% but that is not a standard magnification.
 
 
% In order for the font changes to affect most math symbols and letters,
% In order for the font changes to affect most math symbols and letters,
% we have to define the \textfont of the standard families.  Since
% we have to define the \textfont of the standard families.  Since
% texinfo doesn't allow for producing subscripts and superscripts, we
% texinfo doesn't allow for producing subscripts and superscripts, we
% don't bother to reset \scriptfont and \scriptscriptfont (which would
% don't bother to reset \scriptfont and \scriptscriptfont (which would
% also require loading a lot more fonts).
% also require loading a lot more fonts).
%
%
\def\resetmathfonts{%
\def\resetmathfonts{%
  \textfont0 = \tenrm \textfont1 = \teni \textfont2 = \tensy
  \textfont0 = \tenrm \textfont1 = \teni \textfont2 = \tensy
  \textfont\itfam = \tenit \textfont\slfam = \tensl \textfont\bffam = \tenbf
  \textfont\itfam = \tenit \textfont\slfam = \tensl \textfont\bffam = \tenbf
  \textfont\ttfam = \tentt \textfont\sffam = \tensf
  \textfont\ttfam = \tentt \textfont\sffam = \tensf
}
}
 
 
 
 
% The font-changing commands redefine the meanings of \tenSTYLE, instead
% The font-changing commands redefine the meanings of \tenSTYLE, instead
% of just \STYLE.  We do this so that font changes will continue to work
% of just \STYLE.  We do this so that font changes will continue to work
% in math mode, where it is the current \fam that is relevant in most
% in math mode, where it is the current \fam that is relevant in most
% cases, not the current font.  Plain TeX does \def\bf{\fam=\bffam
% cases, not the current font.  Plain TeX does \def\bf{\fam=\bffam
% \tenbf}, for example.  By redefining \tenbf, we obviate the need to
% \tenbf}, for example.  By redefining \tenbf, we obviate the need to
% redefine \bf itself.
% redefine \bf itself.
\def\textfonts{%
\def\textfonts{%
  \let\tenrm=\textrm \let\tenit=\textit \let\tensl=\textsl
  \let\tenrm=\textrm \let\tenit=\textit \let\tensl=\textsl
  \let\tenbf=\textbf \let\tentt=\texttt \let\smallcaps=\textsc
  \let\tenbf=\textbf \let\tentt=\texttt \let\smallcaps=\textsc
  \let\tensf=\textsf \let\teni=\texti \let\tensy=\textsy \let\tenttsl=\textttsl
  \let\tensf=\textsf \let\teni=\texti \let\tensy=\textsy \let\tenttsl=\textttsl
  \resetmathfonts}
  \resetmathfonts}
\def\titlefonts{%
\def\titlefonts{%
  \let\tenrm=\titlerm \let\tenit=\titleit \let\tensl=\titlesl
  \let\tenrm=\titlerm \let\tenit=\titleit \let\tensl=\titlesl
  \let\tenbf=\titlebf \let\tentt=\titlett \let\smallcaps=\titlesc
  \let\tenbf=\titlebf \let\tentt=\titlett \let\smallcaps=\titlesc
  \let\tensf=\titlesf \let\teni=\titlei \let\tensy=\titlesy
  \let\tensf=\titlesf \let\teni=\titlei \let\tensy=\titlesy
  \let\tenttsl=\titlettsl
  \let\tenttsl=\titlettsl
  \resetmathfonts \setleading{25pt}}
  \resetmathfonts \setleading{25pt}}
\def\titlefont#1{{\titlefonts\rm #1}}
\def\titlefont#1{{\titlefonts\rm #1}}
\def\chapfonts{%
\def\chapfonts{%
  \let\tenrm=\chaprm \let\tenit=\chapit \let\tensl=\chapsl
  \let\tenrm=\chaprm \let\tenit=\chapit \let\tensl=\chapsl
  \let\tenbf=\chapbf \let\tentt=\chaptt \let\smallcaps=\chapsc
  \let\tenbf=\chapbf \let\tentt=\chaptt \let\smallcaps=\chapsc
  \let\tensf=\chapsf \let\teni=\chapi \let\tensy=\chapsy \let\tenttsl=\chapttsl
  \let\tensf=\chapsf \let\teni=\chapi \let\tensy=\chapsy \let\tenttsl=\chapttsl
  \resetmathfonts \setleading{19pt}}
  \resetmathfonts \setleading{19pt}}
\def\secfonts{%
\def\secfonts{%
  \let\tenrm=\secrm \let\tenit=\secit \let\tensl=\secsl
  \let\tenrm=\secrm \let\tenit=\secit \let\tensl=\secsl
  \let\tenbf=\secbf \let\tentt=\sectt \let\smallcaps=\secsc
  \let\tenbf=\secbf \let\tentt=\sectt \let\smallcaps=\secsc
  \let\tensf=\secsf \let\teni=\seci \let\tensy=\secsy \let\tenttsl=\secttsl
  \let\tensf=\secsf \let\teni=\seci \let\tensy=\secsy \let\tenttsl=\secttsl
  \resetmathfonts \setleading{16pt}}
  \resetmathfonts \setleading{16pt}}
\def\subsecfonts{%
\def\subsecfonts{%
  \let\tenrm=\ssecrm \let\tenit=\ssecit \let\tensl=\ssecsl
  \let\tenrm=\ssecrm \let\tenit=\ssecit \let\tensl=\ssecsl
  \let\tenbf=\ssecbf \let\tentt=\ssectt \let\smallcaps=\ssecsc
  \let\tenbf=\ssecbf \let\tentt=\ssectt \let\smallcaps=\ssecsc
  \let\tensf=\ssecsf \let\teni=\sseci \let\tensy=\ssecsy \let\tenttsl=\ssecttsl
  \let\tensf=\ssecsf \let\teni=\sseci \let\tensy=\ssecsy \let\tenttsl=\ssecttsl
  \resetmathfonts \setleading{15pt}}
  \resetmathfonts \setleading{15pt}}
\let\subsubsecfonts = \subsecfonts % Maybe make sssec fonts scaled magstephalf?
\let\subsubsecfonts = \subsecfonts % Maybe make sssec fonts scaled magstephalf?
\def\indexfonts{%
\def\indexfonts{%
  \let\tenrm=\indrm \let\tenit=\indit \let\tensl=\indsl
  \let\tenrm=\indrm \let\tenit=\indit \let\tensl=\indsl
  \let\tenbf=\indbf \let\tentt=\indtt \let\smallcaps=\indsc
  \let\tenbf=\indbf \let\tentt=\indtt \let\smallcaps=\indsc
  \let\tensf=\indsf \let\teni=\indi \let\tensy=\indsy \let\tenttsl=\indttsl
  \let\tensf=\indsf \let\teni=\indi \let\tensy=\indsy \let\tenttsl=\indttsl
  \resetmathfonts \setleading{12pt}}
  \resetmathfonts \setleading{12pt}}
 
 
% Set up the default fonts, so we can use them for creating boxes.
% Set up the default fonts, so we can use them for creating boxes.
%
%
\textfonts
\textfonts
 
 
% Define these so they can be easily changed for other fonts.
% Define these so they can be easily changed for other fonts.
\def\angleleft{$\langle$}
\def\angleleft{$\langle$}
\def\angleright{$\rangle$}
\def\angleright{$\rangle$}
 
 
% Count depth in font-changes, for error checks
% Count depth in font-changes, for error checks
\newcount\fontdepth \fontdepth=0
\newcount\fontdepth \fontdepth=0
 
 
% Fonts for short table of contents.
% Fonts for short table of contents.
\setfont\shortcontrm\rmshape{12}{1000}
\setfont\shortcontrm\rmshape{12}{1000}
\setfont\shortcontbf\bxshape{12}{1000}
\setfont\shortcontbf\bxshape{12}{1000}
\setfont\shortcontsl\slshape{12}{1000}
\setfont\shortcontsl\slshape{12}{1000}
 
 
%% Add scribe-like font environments, plus @l for inline lisp (usually sans
%% Add scribe-like font environments, plus @l for inline lisp (usually sans
%% serif) and @ii for TeX italic
%% serif) and @ii for TeX italic
 
 
% \smartitalic{ARG} outputs arg in italics, followed by an italic correction
% \smartitalic{ARG} outputs arg in italics, followed by an italic correction
% unless the following character is such as not to need one.
% unless the following character is such as not to need one.
\def\smartitalicx{\ifx\next,\else\ifx\next-\else\ifx\next.\else\/\fi\fi\fi}
\def\smartitalicx{\ifx\next,\else\ifx\next-\else\ifx\next.\else\/\fi\fi\fi}
\def\smartslanted#1{{\sl #1}\futurelet\next\smartitalicx}
\def\smartslanted#1{{\sl #1}\futurelet\next\smartitalicx}
\def\smartitalic#1{{\it #1}\futurelet\next\smartitalicx}
\def\smartitalic#1{{\it #1}\futurelet\next\smartitalicx}
 
 
\let\i=\smartitalic
\let\i=\smartitalic
\let\var=\smartslanted
\let\var=\smartslanted
\let\dfn=\smartslanted
\let\dfn=\smartslanted
\let\emph=\smartitalic
\let\emph=\smartitalic
\let\cite=\smartslanted
\let\cite=\smartslanted
 
 
\def\b#1{{\bf #1}}
\def\b#1{{\bf #1}}
\let\strong=\b
\let\strong=\b
 
 
% We can't just use \exhyphenpenalty, because that only has effect at
% We can't just use \exhyphenpenalty, because that only has effect at
% the end of a paragraph.  Restore normal hyphenation at the end of the
% the end of a paragraph.  Restore normal hyphenation at the end of the
% group within which \nohyphenation is presumably called.
% group within which \nohyphenation is presumably called.
%
%
\def\nohyphenation{\hyphenchar\font = -1  \aftergroup\restorehyphenation}
\def\nohyphenation{\hyphenchar\font = -1  \aftergroup\restorehyphenation}
\def\restorehyphenation{\hyphenchar\font = `- }
\def\restorehyphenation{\hyphenchar\font = `- }
 
 
\def\t#1{%
\def\t#1{%
  {\tt \rawbackslash \frenchspacing #1}%
  {\tt \rawbackslash \frenchspacing #1}%
  \null
  \null
}
}
\let\ttfont=\t
\let\ttfont=\t
\def\samp#1{`\tclose{#1}'\null}
\def\samp#1{`\tclose{#1}'\null}
\setfont\smallrm\rmshape{8}{1000}
\setfont\smallrm\rmshape{8}{1000}
\font\smallsy=cmsy9
\font\smallsy=cmsy9
\def\key#1{{\smallrm\textfont2=\smallsy \leavevmode\hbox{%
\def\key#1{{\smallrm\textfont2=\smallsy \leavevmode\hbox{%
  \raise0.4pt\hbox{\angleleft}\kern-.08em\vtop{%
  \raise0.4pt\hbox{\angleleft}\kern-.08em\vtop{%
    \vbox{\hrule\kern-0.4pt
    \vbox{\hrule\kern-0.4pt
     \hbox{\raise0.4pt\hbox{\vphantom{\angleleft}}#1}}%
     \hbox{\raise0.4pt\hbox{\vphantom{\angleleft}}#1}}%
    \kern-0.4pt\hrule}%
    \kern-0.4pt\hrule}%
  \kern-.06em\raise0.4pt\hbox{\angleright}}}}
  \kern-.06em\raise0.4pt\hbox{\angleright}}}}
% The old definition, with no lozenge:
% The old definition, with no lozenge:
%\def\key #1{{\ttsl \nohyphenation \uppercase{#1}}\null}
%\def\key #1{{\ttsl \nohyphenation \uppercase{#1}}\null}
\def\ctrl #1{{\tt \rawbackslash \hat}#1}
\def\ctrl #1{{\tt \rawbackslash \hat}#1}
 
 
% @file, @option are the same as @samp.
% @file, @option are the same as @samp.
\let\file=\samp
\let\file=\samp
\let\option=\samp
\let\option=\samp
 
 
% @code is a modification of @t,
% @code is a modification of @t,
% which makes spaces the same size as normal in the surrounding text.
% which makes spaces the same size as normal in the surrounding text.
\def\tclose#1{%
\def\tclose#1{%
  {%
  {%
    % Change normal interword space to be same as for the current font.
    % Change normal interword space to be same as for the current font.
    \spaceskip = \fontdimen2\font
    \spaceskip = \fontdimen2\font
    %
    %
    % Switch to typewriter.
    % Switch to typewriter.
    \tt
    \tt
    %
    %
    % But `\ ' produces the large typewriter interword space.
    % But `\ ' produces the large typewriter interword space.
    \def\ {{\spaceskip = 0pt{} }}%
    \def\ {{\spaceskip = 0pt{} }}%
    %
    %
    % Turn off hyphenation.
    % Turn off hyphenation.
    \nohyphenation
    \nohyphenation
    %
    %
    \rawbackslash
    \rawbackslash
    \frenchspacing
    \frenchspacing
    #1%
    #1%
  }%
  }%
  \null
  \null
}
}
 
 
% We *must* turn on hyphenation at `-' and `_' in \code.
% We *must* turn on hyphenation at `-' and `_' in \code.
% Otherwise, it is too hard to avoid overfull hboxes
% Otherwise, it is too hard to avoid overfull hboxes
% in the Emacs manual, the Library manual, etc.
% in the Emacs manual, the Library manual, etc.
 
 
% Unfortunately, TeX uses one parameter (\hyphenchar) to control
% Unfortunately, TeX uses one parameter (\hyphenchar) to control
% both hyphenation at - and hyphenation within words.
% both hyphenation at - and hyphenation within words.
% We must therefore turn them both off (\tclose does that)
% We must therefore turn them both off (\tclose does that)
% and arrange explicitly to hyphenate at a dash.
% and arrange explicitly to hyphenate at a dash.
%  -- rms.
%  -- rms.
{
{
  \catcode`\-=\active
  \catcode`\-=\active
  \catcode`\_=\active
  \catcode`\_=\active
  %
  %
  \global\def\code{\begingroup
  \global\def\code{\begingroup
    \catcode`\-=\active \let-\codedash
    \catcode`\-=\active \let-\codedash
    \catcode`\_=\active \let_\codeunder
    \catcode`\_=\active \let_\codeunder
    \codex
    \codex
  }
  }
  %
  %
  % If we end up with any active - characters when handling the index,
  % If we end up with any active - characters when handling the index,
  % just treat them as a normal -.
  % just treat them as a normal -.
  \global\def\indexbreaks{\catcode`\-=\active \let-\realdash}
  \global\def\indexbreaks{\catcode`\-=\active \let-\realdash}
}
}
 
 
\def\realdash{-}
\def\realdash{-}
\def\codedash{-\discretionary{}{}{}}
\def\codedash{-\discretionary{}{}{}}
\def\codeunder{\ifusingtt{\normalunderscore\discretionary{}{}{}}{\_}}
\def\codeunder{\ifusingtt{\normalunderscore\discretionary{}{}{}}{\_}}
\def\codex #1{\tclose{#1}\endgroup}
\def\codex #1{\tclose{#1}\endgroup}
 
 
%\let\exp=\tclose  %Was temporary
%\let\exp=\tclose  %Was temporary
 
 
% @kbd is like @code, except that if the argument is just one @key command,
% @kbd is like @code, except that if the argument is just one @key command,
% then @kbd has no effect.
% then @kbd has no effect.
 
 
% @kbdinputstyle -- arg is `distinct' (@kbd uses slanted tty font always),
% @kbdinputstyle -- arg is `distinct' (@kbd uses slanted tty font always),
%   `example' (@kbd uses ttsl only inside of @example and friends),
%   `example' (@kbd uses ttsl only inside of @example and friends),
%   or `code' (@kbd uses normal tty font always).
%   or `code' (@kbd uses normal tty font always).
\def\kbdinputstyle{\parsearg\kbdinputstylexxx}
\def\kbdinputstyle{\parsearg\kbdinputstylexxx}
\def\kbdinputstylexxx#1{%
\def\kbdinputstylexxx#1{%
  \def\arg{#1}%
  \def\arg{#1}%
  \ifx\arg\worddistinct
  \ifx\arg\worddistinct
    \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\ttsl}%
    \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\ttsl}%
  \else\ifx\arg\wordexample
  \else\ifx\arg\wordexample
    \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\tt}%
    \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\tt}%
  \else\ifx\arg\wordcode
  \else\ifx\arg\wordcode
    \gdef\kbdexamplefont{\tt}\gdef\kbdfont{\tt}%
    \gdef\kbdexamplefont{\tt}\gdef\kbdfont{\tt}%
  \fi\fi\fi
  \fi\fi\fi
}
}
\def\worddistinct{distinct}
\def\worddistinct{distinct}
\def\wordexample{example}
\def\wordexample{example}
\def\wordcode{code}
\def\wordcode{code}
 
 
% Default is kbdinputdistinct.  (Too much of a hassle to call the macro,
% Default is kbdinputdistinct.  (Too much of a hassle to call the macro,
% the catcodes are wrong for parsearg to work.)
% the catcodes are wrong for parsearg to work.)
\gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\ttsl}
\gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\ttsl}
 
 
\def\xkey{\key}
\def\xkey{\key}
\def\kbdfoo#1#2#3\par{\def\one{#1}\def\three{#3}\def\threex{??}%
\def\kbdfoo#1#2#3\par{\def\one{#1}\def\three{#3}\def\threex{??}%
\ifx\one\xkey\ifx\threex\three \key{#2}%
\ifx\one\xkey\ifx\threex\three \key{#2}%
\else{\tclose{\kbdfont\look}}\fi
\else{\tclose{\kbdfont\look}}\fi
\else{\tclose{\kbdfont\look}}\fi}
\else{\tclose{\kbdfont\look}}\fi}
 
 
% For @url, @env, @command quotes seem unnecessary, so use \code.
% For @url, @env, @command quotes seem unnecessary, so use \code.
\let\url=\code
\let\url=\code
\let\env=\code
\let\env=\code
\let\command=\code
\let\command=\code
 
 
% @uref (abbreviation for `urlref') takes an optional second argument
% @uref (abbreviation for `urlref') takes an optional second argument
% specifying the text to display.  First (mandatory) arg is the url.
% specifying the text to display.  First (mandatory) arg is the url.
% Perhaps eventually put in a hypertex \special here.
% Perhaps eventually put in a hypertex \special here.
%
%
\def\uref#1{\urefxxx #1,,\finish}
\def\uref#1{\urefxxx #1,,\finish}
\def\urefxxx#1,#2,#3\finish{%
\def\urefxxx#1,#2,#3\finish{%
  \setbox0 = \hbox{\ignorespaces #2}%
  \setbox0 = \hbox{\ignorespaces #2}%
  \ifdim\wd0 > 0pt
  \ifdim\wd0 > 0pt
    \unhbox0\ (\code{#1})%
    \unhbox0\ (\code{#1})%
  \else
  \else
    \code{#1}%
    \code{#1}%
  \fi
  \fi
}
}
 
 
% rms does not like the angle brackets --karl, 17may97.
% rms does not like the angle brackets --karl, 17may97.
% So now @email is just like @uref.
% So now @email is just like @uref.
%\def\email#1{\angleleft{\tt #1}\angleright}
%\def\email#1{\angleleft{\tt #1}\angleright}
\let\email=\uref
\let\email=\uref
 
 
% Check if we are currently using a typewriter font.  Since all the
% Check if we are currently using a typewriter font.  Since all the
% Computer Modern typewriter fonts have zero interword stretch (and
% Computer Modern typewriter fonts have zero interword stretch (and
% shrink), and it is reasonable to expect all typewriter fonts to have
% shrink), and it is reasonable to expect all typewriter fonts to have
% this property, we can check that font parameter.
% this property, we can check that font parameter.
%
%
\def\ifmonospace{\ifdim\fontdimen3\font=0pt }
\def\ifmonospace{\ifdim\fontdimen3\font=0pt }
 
 
% Typeset a dimension, e.g., `in' or `pt'.  The only reason for the
% Typeset a dimension, e.g., `in' or `pt'.  The only reason for the
% argument is to make the input look right: @dmn{pt} instead of @dmn{}pt.
% argument is to make the input look right: @dmn{pt} instead of @dmn{}pt.
%
%
\def\dmn#1{\thinspace #1}
\def\dmn#1{\thinspace #1}
 
 
\def\kbd#1{\def\look{#1}\expandafter\kbdfoo\look??\par}
\def\kbd#1{\def\look{#1}\expandafter\kbdfoo\look??\par}
 
 
% @l was never documented to mean ``switch to the Lisp font'',
% @l was never documented to mean ``switch to the Lisp font'',
% and it is not used as such in any manual I can find.  We need it for
% and it is not used as such in any manual I can find.  We need it for
% Polish suppressed-l.  --karl, 22sep96.
% Polish suppressed-l.  --karl, 22sep96.
%\def\l#1{{\li #1}\null}
%\def\l#1{{\li #1}\null}
 
 
% Explicit font changes: @r, @sc, undocumented @ii.
% Explicit font changes: @r, @sc, undocumented @ii.
\def\r#1{{\rm #1}}              % roman font
\def\r#1{{\rm #1}}              % roman font
\def\sc#1{{\smallcaps#1}}       % smallcaps font
\def\sc#1{{\smallcaps#1}}       % smallcaps font
\def\ii#1{{\it #1}}             % italic font
\def\ii#1{{\it #1}}             % italic font
 
 
% @acronym downcases the argument and prints in smallcaps.
% @acronym downcases the argument and prints in smallcaps.
\def\acronym#1{{\smallcaps \lowercase{#1}}}
\def\acronym#1{{\smallcaps \lowercase{#1}}}
 
 
% @pounds{} is a sterling sign.
% @pounds{} is a sterling sign.
\def\pounds{{\it\$}}
\def\pounds{{\it\$}}
 
 
 
 
\message{page headings,}
\message{page headings,}
 
 
\newskip\titlepagetopglue \titlepagetopglue = 1.5in
\newskip\titlepagetopglue \titlepagetopglue = 1.5in
\newskip\titlepagebottomglue \titlepagebottomglue = 2pc
\newskip\titlepagebottomglue \titlepagebottomglue = 2pc
 
 
% First the title page.  Must do @settitle before @titlepage.
% First the title page.  Must do @settitle before @titlepage.
\newif\ifseenauthor
\newif\ifseenauthor
\newif\iffinishedtitlepage
\newif\iffinishedtitlepage
 
 
% Do an implicit @contents or @shortcontents after @end titlepage if the
% Do an implicit @contents or @shortcontents after @end titlepage if the
% user says @contentsaftertitlepage or @shortcontentsaftertitlepage.
% user says @contentsaftertitlepage or @shortcontentsaftertitlepage.
%
%
\newif\ifsetcontentsaftertitlepage
\newif\ifsetcontentsaftertitlepage
 \let\setcontentsaftertitlepage = \setcontentsaftertitlepagetrue
 \let\setcontentsaftertitlepage = \setcontentsaftertitlepagetrue
\newif\ifsetshortcontentsaftertitlepage
\newif\ifsetshortcontentsaftertitlepage
 \let\setshortcontentsaftertitlepage = \setshortcontentsaftertitlepagetrue
 \let\setshortcontentsaftertitlepage = \setshortcontentsaftertitlepagetrue
 
 
\def\shorttitlepage{\parsearg\shorttitlepagezzz}
\def\shorttitlepage{\parsearg\shorttitlepagezzz}
\def\shorttitlepagezzz #1{\begingroup\hbox{}\vskip 1.5in \chaprm \centerline{#1}%
\def\shorttitlepagezzz #1{\begingroup\hbox{}\vskip 1.5in \chaprm \centerline{#1}%
        \endgroup\page\hbox{}\page}
        \endgroup\page\hbox{}\page}
 
 
\def\titlepage{\begingroup \parindent=0pt \textfonts
\def\titlepage{\begingroup \parindent=0pt \textfonts
   \let\subtitlerm=\tenrm
   \let\subtitlerm=\tenrm
   \def\subtitlefont{\subtitlerm \normalbaselineskip = 13pt \normalbaselines}%
   \def\subtitlefont{\subtitlerm \normalbaselineskip = 13pt \normalbaselines}%
   %
   %
   \def\authorfont{\authorrm \normalbaselineskip = 16pt \normalbaselines}%
   \def\authorfont{\authorrm \normalbaselineskip = 16pt \normalbaselines}%
   %
   %
   % Leave some space at the very top of the page.
   % Leave some space at the very top of the page.
   \vglue\titlepagetopglue
   \vglue\titlepagetopglue
   %
   %
   % Now you can print the title using @title.
   % Now you can print the title using @title.
   \def\title{\parsearg\titlezzz}%
   \def\title{\parsearg\titlezzz}%
   \def\titlezzz##1{\leftline{\titlefonts\rm ##1}
   \def\titlezzz##1{\leftline{\titlefonts\rm ##1}
                    % print a rule at the page bottom also.
                    % print a rule at the page bottom also.
                    \finishedtitlepagefalse
                    \finishedtitlepagefalse
                    \vskip4pt \hrule height 4pt width \hsize \vskip4pt}%
                    \vskip4pt \hrule height 4pt width \hsize \vskip4pt}%
   % No rule at page bottom unless we print one at the top with @title.
   % No rule at page bottom unless we print one at the top with @title.
   \finishedtitlepagetrue
   \finishedtitlepagetrue
   %
   %
   % Now you can put text using @subtitle.
   % Now you can put text using @subtitle.
   \def\subtitle{\parsearg\subtitlezzz}%
   \def\subtitle{\parsearg\subtitlezzz}%
   \def\subtitlezzz##1{{\subtitlefont \rightline{##1}}}%
   \def\subtitlezzz##1{{\subtitlefont \rightline{##1}}}%
   %
   %
   % @author should come last, but may come many times.
   % @author should come last, but may come many times.
   \def\author{\parsearg\authorzzz}%
   \def\author{\parsearg\authorzzz}%
   \def\authorzzz##1{\ifseenauthor\else\vskip 0pt plus 1filll\seenauthortrue\fi
   \def\authorzzz##1{\ifseenauthor\else\vskip 0pt plus 1filll\seenauthortrue\fi
      {\authorfont \leftline{##1}}}%
      {\authorfont \leftline{##1}}}%
   %
   %
   % Most title ``pages'' are actually two pages long, with space
   % Most title ``pages'' are actually two pages long, with space
   % at the top of the second.  We don't want the ragged left on the second.
   % at the top of the second.  We don't want the ragged left on the second.
   \let\oldpage = \page
   \let\oldpage = \page
   \def\page{%
   \def\page{%
      \iffinishedtitlepage\else
      \iffinishedtitlepage\else
         \finishtitlepage
         \finishtitlepage
      \fi
      \fi
      \oldpage
      \oldpage
      \let\page = \oldpage
      \let\page = \oldpage
      \hbox{}}%
      \hbox{}}%
%   \def\page{\oldpage \hbox{}}
%   \def\page{\oldpage \hbox{}}
}
}
 
 
\def\Etitlepage{%
\def\Etitlepage{%
   \iffinishedtitlepage\else
   \iffinishedtitlepage\else
      \finishtitlepage
      \finishtitlepage
   \fi
   \fi
   % It is important to do the page break before ending the group,
   % It is important to do the page break before ending the group,
   % because the headline and footline are only empty inside the group.
   % because the headline and footline are only empty inside the group.
   % If we use the new definition of \page, we always get a blank page
   % If we use the new definition of \page, we always get a blank page
   % after the title page, which we certainly don't want.
   % after the title page, which we certainly don't want.
   \oldpage
   \oldpage
   \endgroup
   \endgroup
   %
   %
   % If they want short, they certainly want long too.
   % If they want short, they certainly want long too.
   \ifsetshortcontentsaftertitlepage
   \ifsetshortcontentsaftertitlepage
     \shortcontents
     \shortcontents
     \contents
     \contents
     \global\let\shortcontents = \relax
     \global\let\shortcontents = \relax
     \global\let\contents = \relax
     \global\let\contents = \relax
   \fi
   \fi
   %
   %
   \ifsetcontentsaftertitlepage
   \ifsetcontentsaftertitlepage
     \contents
     \contents
     \global\let\contents = \relax
     \global\let\contents = \relax
     \global\let\shortcontents = \relax
     \global\let\shortcontents = \relax
   \fi
   \fi
   %
   %
   \HEADINGSon
   \HEADINGSon
}
}
 
 
\def\finishtitlepage{%
\def\finishtitlepage{%
   \vskip4pt \hrule height 2pt width \hsize
   \vskip4pt \hrule height 2pt width \hsize
   \vskip\titlepagebottomglue
   \vskip\titlepagebottomglue
   \finishedtitlepagetrue
   \finishedtitlepagetrue
}
}
 
 
%%% Set up page headings and footings.
%%% Set up page headings and footings.
 
 
\let\thispage=\folio
\let\thispage=\folio
 
 
\newtoks\evenheadline    % headline on even pages
\newtoks\evenheadline    % headline on even pages
\newtoks\oddheadline     % headline on odd pages
\newtoks\oddheadline     % headline on odd pages
\newtoks\evenfootline    % footline on even pages
\newtoks\evenfootline    % footline on even pages
\newtoks\oddfootline     % footline on odd pages
\newtoks\oddfootline     % footline on odd pages
 
 
% Now make Tex use those variables
% Now make Tex use those variables
\headline={{\textfonts\rm \ifodd\pageno \the\oddheadline
\headline={{\textfonts\rm \ifodd\pageno \the\oddheadline
                            \else \the\evenheadline \fi}}
                            \else \the\evenheadline \fi}}
\footline={{\textfonts\rm \ifodd\pageno \the\oddfootline
\footline={{\textfonts\rm \ifodd\pageno \the\oddfootline
                            \else \the\evenfootline \fi}\HEADINGShook}
                            \else \the\evenfootline \fi}\HEADINGShook}
\let\HEADINGShook=\relax
\let\HEADINGShook=\relax
 
 
% Commands to set those variables.
% Commands to set those variables.
% For example, this is what  @headings on  does
% For example, this is what  @headings on  does
% @evenheading @thistitle|@thispage|@thischapter
% @evenheading @thistitle|@thispage|@thischapter
% @oddheading @thischapter|@thispage|@thistitle
% @oddheading @thischapter|@thispage|@thistitle
% @evenfooting @thisfile||
% @evenfooting @thisfile||
% @oddfooting ||@thisfile
% @oddfooting ||@thisfile
 
 
\def\evenheading{\parsearg\evenheadingxxx}
\def\evenheading{\parsearg\evenheadingxxx}
\def\oddheading{\parsearg\oddheadingxxx}
\def\oddheading{\parsearg\oddheadingxxx}
\def\everyheading{\parsearg\everyheadingxxx}
\def\everyheading{\parsearg\everyheadingxxx}
 
 
\def\evenfooting{\parsearg\evenfootingxxx}
\def\evenfooting{\parsearg\evenfootingxxx}
\def\oddfooting{\parsearg\oddfootingxxx}
\def\oddfooting{\parsearg\oddfootingxxx}
\def\everyfooting{\parsearg\everyfootingxxx}
\def\everyfooting{\parsearg\everyfootingxxx}
 
 
{\catcode`\@=0 %
{\catcode`\@=0 %
 
 
\gdef\evenheadingxxx #1{\evenheadingyyy #1@|@|@|@|\finish}
\gdef\evenheadingxxx #1{\evenheadingyyy #1@|@|@|@|\finish}
\gdef\evenheadingyyy #1@|#2@|#3@|#4\finish{%
\gdef\evenheadingyyy #1@|#2@|#3@|#4\finish{%
\global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
\global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
 
 
\gdef\oddheadingxxx #1{\oddheadingyyy #1@|@|@|@|\finish}
\gdef\oddheadingxxx #1{\oddheadingyyy #1@|@|@|@|\finish}
\gdef\oddheadingyyy #1@|#2@|#3@|#4\finish{%
\gdef\oddheadingyyy #1@|#2@|#3@|#4\finish{%
\global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
\global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
 
 
\gdef\everyheadingxxx#1{\oddheadingxxx{#1}\evenheadingxxx{#1}}%
\gdef\everyheadingxxx#1{\oddheadingxxx{#1}\evenheadingxxx{#1}}%
 
 
\gdef\evenfootingxxx #1{\evenfootingyyy #1@|@|@|@|\finish}
\gdef\evenfootingxxx #1{\evenfootingyyy #1@|@|@|@|\finish}
\gdef\evenfootingyyy #1@|#2@|#3@|#4\finish{%
\gdef\evenfootingyyy #1@|#2@|#3@|#4\finish{%
\global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
\global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
 
 
\gdef\oddfootingxxx #1{\oddfootingyyy #1@|@|@|@|\finish}
\gdef\oddfootingxxx #1{\oddfootingyyy #1@|@|@|@|\finish}
\gdef\oddfootingyyy #1@|#2@|#3@|#4\finish{%
\gdef\oddfootingyyy #1@|#2@|#3@|#4\finish{%
  \global\oddfootline = {\rlap{\centerline{#2}}\line{#1\hfil#3}}%
  \global\oddfootline = {\rlap{\centerline{#2}}\line{#1\hfil#3}}%
  %
  %
  % Leave some space for the footline.  Hopefully ok to assume
  % Leave some space for the footline.  Hopefully ok to assume
  % @evenfooting will not be used by itself.
  % @evenfooting will not be used by itself.
  \global\advance\pageheight by -\baselineskip
  \global\advance\pageheight by -\baselineskip
  \global\advance\vsize by -\baselineskip
  \global\advance\vsize by -\baselineskip
}
}
 
 
\gdef\everyfootingxxx#1{\oddfootingxxx{#1}\evenfootingxxx{#1}}
\gdef\everyfootingxxx#1{\oddfootingxxx{#1}\evenfootingxxx{#1}}
%
%
}% unbind the catcode of @.
}% unbind the catcode of @.
 
 
% @headings double      turns headings on for double-sided printing.
% @headings double      turns headings on for double-sided printing.
% @headings single      turns headings on for single-sided printing.
% @headings single      turns headings on for single-sided printing.
% @headings off         turns them off.
% @headings off         turns them off.
% @headings on          same as @headings double, retained for compatibility.
% @headings on          same as @headings double, retained for compatibility.
% @headings after       turns on double-sided headings after this page.
% @headings after       turns on double-sided headings after this page.
% @headings doubleafter turns on double-sided headings after this page.
% @headings doubleafter turns on double-sided headings after this page.
% @headings singleafter turns on single-sided headings after this page.
% @headings singleafter turns on single-sided headings after this page.
% By default, they are off at the start of a document,
% By default, they are off at the start of a document,
% and turned `on' after @end titlepage.
% and turned `on' after @end titlepage.
 
 
\def\headings #1 {\csname HEADINGS#1\endcsname}
\def\headings #1 {\csname HEADINGS#1\endcsname}
 
 
\def\HEADINGSoff{
\def\HEADINGSoff{
\global\evenheadline={\hfil} \global\evenfootline={\hfil}
\global\evenheadline={\hfil} \global\evenfootline={\hfil}
\global\oddheadline={\hfil} \global\oddfootline={\hfil}}
\global\oddheadline={\hfil} \global\oddfootline={\hfil}}
\HEADINGSoff
\HEADINGSoff
% When we turn headings on, set the page number to 1.
% When we turn headings on, set the page number to 1.
% For double-sided printing, put current file name in lower left corner,
% For double-sided printing, put current file name in lower left corner,
% chapter name on inside top of right hand pages, document
% chapter name on inside top of right hand pages, document
% title on inside top of left hand pages, and page numbers on outside top
% title on inside top of left hand pages, and page numbers on outside top
% edge of all pages.
% edge of all pages.
\def\HEADINGSdouble{
\def\HEADINGSdouble{
\global\pageno=1
\global\pageno=1
\global\evenfootline={\hfil}
\global\evenfootline={\hfil}
\global\oddfootline={\hfil}
\global\oddfootline={\hfil}
\global\evenheadline={\line{\folio\hfil\thistitle}}
\global\evenheadline={\line{\folio\hfil\thistitle}}
\global\oddheadline={\line{\thischapter\hfil\folio}}
\global\oddheadline={\line{\thischapter\hfil\folio}}
\global\let\contentsalignmacro = \chapoddpage
\global\let\contentsalignmacro = \chapoddpage
}
}
\let\contentsalignmacro = \chappager
\let\contentsalignmacro = \chappager
 
 
% For single-sided printing, chapter title goes across top left of page,
% For single-sided printing, chapter title goes across top left of page,
% page number on top right.
% page number on top right.
\def\HEADINGSsingle{
\def\HEADINGSsingle{
\global\pageno=1
\global\pageno=1
\global\evenfootline={\hfil}
\global\evenfootline={\hfil}
\global\oddfootline={\hfil}
\global\oddfootline={\hfil}
\global\evenheadline={\line{\thischapter\hfil\folio}}
\global\evenheadline={\line{\thischapter\hfil\folio}}
\global\oddheadline={\line{\thischapter\hfil\folio}}
\global\oddheadline={\line{\thischapter\hfil\folio}}
\global\let\contentsalignmacro = \chappager
\global\let\contentsalignmacro = \chappager
}
}
\def\HEADINGSon{\HEADINGSdouble}
\def\HEADINGSon{\HEADINGSdouble}
 
 
\def\HEADINGSafter{\let\HEADINGShook=\HEADINGSdoublex}
\def\HEADINGSafter{\let\HEADINGShook=\HEADINGSdoublex}
\let\HEADINGSdoubleafter=\HEADINGSafter
\let\HEADINGSdoubleafter=\HEADINGSafter
\def\HEADINGSdoublex{%
\def\HEADINGSdoublex{%
\global\evenfootline={\hfil}
\global\evenfootline={\hfil}
\global\oddfootline={\hfil}
\global\oddfootline={\hfil}
\global\evenheadline={\line{\folio\hfil\thistitle}}
\global\evenheadline={\line{\folio\hfil\thistitle}}
\global\oddheadline={\line{\thischapter\hfil\folio}}
\global\oddheadline={\line{\thischapter\hfil\folio}}
\global\let\contentsalignmacro = \chapoddpage
\global\let\contentsalignmacro = \chapoddpage
}
}
 
 
\def\HEADINGSsingleafter{\let\HEADINGShook=\HEADINGSsinglex}
\def\HEADINGSsingleafter{\let\HEADINGShook=\HEADINGSsinglex}
\def\HEADINGSsinglex{%
\def\HEADINGSsinglex{%
\global\evenfootline={\hfil}
\global\evenfootline={\hfil}
\global\oddfootline={\hfil}
\global\oddfootline={\hfil}
\global\evenheadline={\line{\thischapter\hfil\folio}}
\global\evenheadline={\line{\thischapter\hfil\folio}}
\global\oddheadline={\line{\thischapter\hfil\folio}}
\global\oddheadline={\line{\thischapter\hfil\folio}}
\global\let\contentsalignmacro = \chappager
\global\let\contentsalignmacro = \chappager
}
}
 
 
% Subroutines used in generating headings
% Subroutines used in generating headings
% Produces Day Month Year style of output.
% Produces Day Month Year style of output.
\def\today{\number\day\space
\def\today{\number\day\space
\ifcase\month\or
\ifcase\month\or
January\or February\or March\or April\or May\or June\or
January\or February\or March\or April\or May\or June\or
July\or August\or September\or October\or November\or December\fi
July\or August\or September\or October\or November\or December\fi
\space\number\year}
\space\number\year}
 
 
% Use this if you want the Month Day, Year style of output.
% Use this if you want the Month Day, Year style of output.
%\def\today{\ifcase\month\or
%\def\today{\ifcase\month\or
%January\or February\or March\or April\or May\or June\or
%January\or February\or March\or April\or May\or June\or
%July\or August\or September\or October\or November\or December\fi
%July\or August\or September\or October\or November\or December\fi
%\space\number\day, \number\year}
%\space\number\day, \number\year}
 
 
% @settitle line...  specifies the title of the document, for headings
% @settitle line...  specifies the title of the document, for headings
% It generates no output of its own
% It generates no output of its own
 
 
\def\thistitle{No Title}
\def\thistitle{No Title}
\def\settitle{\parsearg\settitlezzz}
\def\settitle{\parsearg\settitlezzz}
\def\settitlezzz #1{\gdef\thistitle{#1}}
\def\settitlezzz #1{\gdef\thistitle{#1}}
 
 
 
 
\message{tables,}
\message{tables,}
% Tables -- @table, @ftable, @vtable, @item(x), @kitem(x), @xitem(x).
% Tables -- @table, @ftable, @vtable, @item(x), @kitem(x), @xitem(x).
 
 
% default indentation of table text
% default indentation of table text
\newdimen\tableindent \tableindent=.8in
\newdimen\tableindent \tableindent=.8in
% default indentation of @itemize and @enumerate text
% default indentation of @itemize and @enumerate text
\newdimen\itemindent  \itemindent=.3in
\newdimen\itemindent  \itemindent=.3in
% margin between end of table item and start of table text.
% margin between end of table item and start of table text.
\newdimen\itemmargin  \itemmargin=.1in
\newdimen\itemmargin  \itemmargin=.1in
 
 
% used internally for \itemindent minus \itemmargin
% used internally for \itemindent minus \itemmargin
\newdimen\itemmax
\newdimen\itemmax
 
 
% Note @table, @vtable, and @vtable define @item, @itemx, etc., with
% Note @table, @vtable, and @vtable define @item, @itemx, etc., with
% these defs.
% these defs.
% They also define \itemindex
% They also define \itemindex
% to index the item name in whatever manner is desired (perhaps none).
% to index the item name in whatever manner is desired (perhaps none).
 
 
\newif\ifitemxneedsnegativevskip
\newif\ifitemxneedsnegativevskip
 
 
\def\itemxpar{\par\ifitemxneedsnegativevskip\nobreak\vskip-\parskip\nobreak\fi}
\def\itemxpar{\par\ifitemxneedsnegativevskip\nobreak\vskip-\parskip\nobreak\fi}
 
 
\def\internalBitem{\smallbreak \parsearg\itemzzz}
\def\internalBitem{\smallbreak \parsearg\itemzzz}
\def\internalBitemx{\itemxpar \parsearg\itemzzz}
\def\internalBitemx{\itemxpar \parsearg\itemzzz}
 
 
\def\internalBxitem "#1"{\def\xitemsubtopix{#1} \smallbreak \parsearg\xitemzzz}
\def\internalBxitem "#1"{\def\xitemsubtopix{#1} \smallbreak \parsearg\xitemzzz}
\def\internalBxitemx "#1"{\def\xitemsubtopix{#1} \itemxpar \parsearg\xitemzzz}
\def\internalBxitemx "#1"{\def\xitemsubtopix{#1} \itemxpar \parsearg\xitemzzz}
 
 
\def\internalBkitem{\smallbreak \parsearg\kitemzzz}
\def\internalBkitem{\smallbreak \parsearg\kitemzzz}
\def\internalBkitemx{\itemxpar \parsearg\kitemzzz}
\def\internalBkitemx{\itemxpar \parsearg\kitemzzz}
 
 
\def\kitemzzz #1{\dosubind {kw}{\code{#1}}{for {\bf \lastfunction}}%
\def\kitemzzz #1{\dosubind {kw}{\code{#1}}{for {\bf \lastfunction}}%
                 \itemzzz {#1}}
                 \itemzzz {#1}}
 
 
\def\xitemzzz #1{\dosubind {kw}{\code{#1}}{for {\bf \xitemsubtopic}}%
\def\xitemzzz #1{\dosubind {kw}{\code{#1}}{for {\bf \xitemsubtopic}}%
                 \itemzzz {#1}}
                 \itemzzz {#1}}
 
 
\def\itemzzz #1{\begingroup %
\def\itemzzz #1{\begingroup %
  \advance\hsize by -\rightskip
  \advance\hsize by -\rightskip
  \advance\hsize by -\tableindent
  \advance\hsize by -\tableindent
  \setbox0=\hbox{\itemfont{#1}}%
  \setbox0=\hbox{\itemfont{#1}}%
  \itemindex{#1}%
  \itemindex{#1}%
  \nobreak % This prevents a break before @itemx.
  \nobreak % This prevents a break before @itemx.
  %
  %
  % If the item text does not fit in the space we have, put it on a line
  % If the item text does not fit in the space we have, put it on a line
  % by itself, and do not allow a page break either before or after that
  % by itself, and do not allow a page break either before or after that
  % line.  We do not start a paragraph here because then if the next
  % line.  We do not start a paragraph here because then if the next
  % command is, e.g., @kindex, the whatsit would get put into the
  % command is, e.g., @kindex, the whatsit would get put into the
  % horizontal list on a line by itself, resulting in extra blank space.
  % horizontal list on a line by itself, resulting in extra blank space.
  \ifdim \wd0>\itemmax
  \ifdim \wd0>\itemmax
    %
    %
    % Make this a paragraph so we get the \parskip glue and wrapping,
    % Make this a paragraph so we get the \parskip glue and wrapping,
    % but leave it ragged-right.
    % but leave it ragged-right.
    \begingroup
    \begingroup
      \advance\leftskip by-\tableindent
      \advance\leftskip by-\tableindent
      \advance\hsize by\tableindent
      \advance\hsize by\tableindent
      \advance\rightskip by0pt plus1fil
      \advance\rightskip by0pt plus1fil
      \leavevmode\unhbox0\par
      \leavevmode\unhbox0\par
    \endgroup
    \endgroup
    %
    %
    % We're going to be starting a paragraph, but we don't want the
    % We're going to be starting a paragraph, but we don't want the
    % \parskip glue -- logically it's part of the @item we just started.
    % \parskip glue -- logically it's part of the @item we just started.
    \nobreak \vskip-\parskip
    \nobreak \vskip-\parskip
    %
    %
    % Stop a page break at the \parskip glue coming up.  Unfortunately
    % Stop a page break at the \parskip glue coming up.  Unfortunately
    % we can't prevent a possible page break at the following
    % we can't prevent a possible page break at the following
    % \baselineskip glue.
    % \baselineskip glue.
    \nobreak
    \nobreak
    \endgroup
    \endgroup
    \itemxneedsnegativevskipfalse
    \itemxneedsnegativevskipfalse
  \else
  \else
    % The item text fits into the space.  Start a paragraph, so that the
    % The item text fits into the space.  Start a paragraph, so that the
    % following text (if any) will end up on the same line.
    % following text (if any) will end up on the same line.
    \noindent
    \noindent
    % Do this with kerns and \unhbox so that if there is a footnote in
    % Do this with kerns and \unhbox so that if there is a footnote in
    % the item text, it can migrate to the main vertical list and
    % the item text, it can migrate to the main vertical list and
    % eventually be printed.
    % eventually be printed.
    \nobreak\kern-\tableindent
    \nobreak\kern-\tableindent
    \dimen0 = \itemmax  \advance\dimen0 by \itemmargin \advance\dimen0 by -\wd0
    \dimen0 = \itemmax  \advance\dimen0 by \itemmargin \advance\dimen0 by -\wd0
    \unhbox0
    \unhbox0
    \nobreak\kern\dimen0
    \nobreak\kern\dimen0
    \endgroup
    \endgroup
    \itemxneedsnegativevskiptrue
    \itemxneedsnegativevskiptrue
  \fi
  \fi
}
}
 
 
\def\item{\errmessage{@item while not in a table}}
\def\item{\errmessage{@item while not in a table}}
\def\itemx{\errmessage{@itemx while not in a table}}
\def\itemx{\errmessage{@itemx while not in a table}}
\def\kitem{\errmessage{@kitem while not in a table}}
\def\kitem{\errmessage{@kitem while not in a table}}
\def\kitemx{\errmessage{@kitemx while not in a table}}
\def\kitemx{\errmessage{@kitemx while not in a table}}
\def\xitem{\errmessage{@xitem while not in a table}}
\def\xitem{\errmessage{@xitem while not in a table}}
\def\xitemx{\errmessage{@xitemx while not in a table}}
\def\xitemx{\errmessage{@xitemx while not in a table}}
 
 
% Contains a kludge to get @end[description] to work.
% Contains a kludge to get @end[description] to work.
\def\description{\tablez{\dontindex}{1}{}{}{}{}}
\def\description{\tablez{\dontindex}{1}{}{}{}{}}
 
 
% @table, @ftable, @vtable.
% @table, @ftable, @vtable.
\def\table{\begingroup\inENV\obeylines\obeyspaces\tablex}
\def\table{\begingroup\inENV\obeylines\obeyspaces\tablex}
{\obeylines\obeyspaces%
{\obeylines\obeyspaces%
\gdef\tablex #1^^M{%
\gdef\tablex #1^^M{%
\tabley\dontindex#1        \endtabley}}
\tabley\dontindex#1        \endtabley}}
 
 
\def\ftable{\begingroup\inENV\obeylines\obeyspaces\ftablex}
\def\ftable{\begingroup\inENV\obeylines\obeyspaces\ftablex}
{\obeylines\obeyspaces%
{\obeylines\obeyspaces%
\gdef\ftablex #1^^M{%
\gdef\ftablex #1^^M{%
\tabley\fnitemindex#1        \endtabley
\tabley\fnitemindex#1        \endtabley
\def\Eftable{\endgraf\afterenvbreak\endgroup}%
\def\Eftable{\endgraf\afterenvbreak\endgroup}%
\let\Etable=\relax}}
\let\Etable=\relax}}
 
 
\def\vtable{\begingroup\inENV\obeylines\obeyspaces\vtablex}
\def\vtable{\begingroup\inENV\obeylines\obeyspaces\vtablex}
{\obeylines\obeyspaces%
{\obeylines\obeyspaces%
\gdef\vtablex #1^^M{%
\gdef\vtablex #1^^M{%
\tabley\vritemindex#1        \endtabley
\tabley\vritemindex#1        \endtabley
\def\Evtable{\endgraf\afterenvbreak\endgroup}%
\def\Evtable{\endgraf\afterenvbreak\endgroup}%
\let\Etable=\relax}}
\let\Etable=\relax}}
 
 
\def\dontindex #1{}
\def\dontindex #1{}
\def\fnitemindex #1{\doind {fn}{\code{#1}}}%
\def\fnitemindex #1{\doind {fn}{\code{#1}}}%
\def\vritemindex #1{\doind {vr}{\code{#1}}}%
\def\vritemindex #1{\doind {vr}{\code{#1}}}%
 
 
{\obeyspaces %
{\obeyspaces %
\gdef\tabley#1#2 #3 #4 #5 #6 #7\endtabley{\endgroup%
\gdef\tabley#1#2 #3 #4 #5 #6 #7\endtabley{\endgroup%
\tablez{#1}{#2}{#3}{#4}{#5}{#6}}}
\tablez{#1}{#2}{#3}{#4}{#5}{#6}}}
 
 
\def\tablez #1#2#3#4#5#6{%
\def\tablez #1#2#3#4#5#6{%
\aboveenvbreak %
\aboveenvbreak %
\begingroup %
\begingroup %
\def\Edescription{\Etable}% Necessary kludge.
\def\Edescription{\Etable}% Necessary kludge.
\let\itemindex=#1%
\let\itemindex=#1%
\ifnum 0#3>0 \advance \leftskip by #3\mil \fi %
\ifnum 0#3>0 \advance \leftskip by #3\mil \fi %
\ifnum 0#4>0 \tableindent=#4\mil \fi %
\ifnum 0#4>0 \tableindent=#4\mil \fi %
\ifnum 0#5>0 \advance \rightskip by #5\mil \fi %
\ifnum 0#5>0 \advance \rightskip by #5\mil \fi %
\def\itemfont{#2}%
\def\itemfont{#2}%
\itemmax=\tableindent %
\itemmax=\tableindent %
\advance \itemmax by -\itemmargin %
\advance \itemmax by -\itemmargin %
\advance \leftskip by \tableindent %
\advance \leftskip by \tableindent %
\exdentamount=\tableindent
\exdentamount=\tableindent
\parindent = 0pt
\parindent = 0pt
\parskip = \smallskipamount
\parskip = \smallskipamount
\ifdim \parskip=0pt \parskip=2pt \fi%
\ifdim \parskip=0pt \parskip=2pt \fi%
\def\Etable{\endgraf\afterenvbreak\endgroup}%
\def\Etable{\endgraf\afterenvbreak\endgroup}%
\let\item = \internalBitem %
\let\item = \internalBitem %
\let\itemx = \internalBitemx %
\let\itemx = \internalBitemx %
\let\kitem = \internalBkitem %
\let\kitem = \internalBkitem %
\let\kitemx = \internalBkitemx %
\let\kitemx = \internalBkitemx %
\let\xitem = \internalBxitem %
\let\xitem = \internalBxitem %
\let\xitemx = \internalBxitemx %
\let\xitemx = \internalBxitemx %
}
}
 
 
% This is the counter used by @enumerate, which is really @itemize
% This is the counter used by @enumerate, which is really @itemize
 
 
\newcount \itemno
\newcount \itemno
 
 
\def\itemize{\parsearg\itemizezzz}
\def\itemize{\parsearg\itemizezzz}
 
 
\def\itemizezzz #1{%
\def\itemizezzz #1{%
  \begingroup % ended by the @end itemize
  \begingroup % ended by the @end itemize
  \itemizey {#1}{\Eitemize}
  \itemizey {#1}{\Eitemize}
}
}
 
 
\def\itemizey #1#2{%
\def\itemizey #1#2{%
\aboveenvbreak %
\aboveenvbreak %
\itemmax=\itemindent %
\itemmax=\itemindent %
\advance \itemmax by -\itemmargin %
\advance \itemmax by -\itemmargin %
\advance \leftskip by \itemindent %
\advance \leftskip by \itemindent %
\exdentamount=\itemindent
\exdentamount=\itemindent
\parindent = 0pt %
\parindent = 0pt %
\parskip = \smallskipamount %
\parskip = \smallskipamount %
\ifdim \parskip=0pt \parskip=2pt \fi%
\ifdim \parskip=0pt \parskip=2pt \fi%
\def#2{\endgraf\afterenvbreak\endgroup}%
\def#2{\endgraf\afterenvbreak\endgroup}%
\def\itemcontents{#1}%
\def\itemcontents{#1}%
\let\item=\itemizeitem}
\let\item=\itemizeitem}
 
 
% Set sfcode to normal for the chars that usually have another value.
% Set sfcode to normal for the chars that usually have another value.
% These are `.?!:;,'
% These are `.?!:;,'
\def\frenchspacing{\sfcode46=1000 \sfcode63=1000 \sfcode33=1000
\def\frenchspacing{\sfcode46=1000 \sfcode63=1000 \sfcode33=1000
  \sfcode58=1000 \sfcode59=1000 \sfcode44=1000 }
  \sfcode58=1000 \sfcode59=1000 \sfcode44=1000 }
 
 
% \splitoff TOKENS\endmark defines \first to be the first token in
% \splitoff TOKENS\endmark defines \first to be the first token in
% TOKENS, and \rest to be the remainder.
% TOKENS, and \rest to be the remainder.
%
%
\def\splitoff#1#2\endmark{\def\first{#1}\def\rest{#2}}%
\def\splitoff#1#2\endmark{\def\first{#1}\def\rest{#2}}%
 
 
% Allow an optional argument of an uppercase letter, lowercase letter,
% Allow an optional argument of an uppercase letter, lowercase letter,
% or number, to specify the first label in the enumerated list.  No
% or number, to specify the first label in the enumerated list.  No
% argument is the same as `1'.
% argument is the same as `1'.
%
%
\def\enumerate{\parsearg\enumeratezzz}
\def\enumerate{\parsearg\enumeratezzz}
\def\enumeratezzz #1{\enumeratey #1  \endenumeratey}
\def\enumeratezzz #1{\enumeratey #1  \endenumeratey}
\def\enumeratey #1 #2\endenumeratey{%
\def\enumeratey #1 #2\endenumeratey{%
  \begingroup % ended by the @end enumerate
  \begingroup % ended by the @end enumerate
  %
  %
  % If we were given no argument, pretend we were given `1'.
  % If we were given no argument, pretend we were given `1'.
  \def\thearg{#1}%
  \def\thearg{#1}%
  \ifx\thearg\empty \def\thearg{1}\fi
  \ifx\thearg\empty \def\thearg{1}\fi
  %
  %
  % Detect if the argument is a single token.  If so, it might be a
  % Detect if the argument is a single token.  If so, it might be a
  % letter.  Otherwise, the only valid thing it can be is a number.
  % letter.  Otherwise, the only valid thing it can be is a number.
  % (We will always have one token, because of the test we just made.
  % (We will always have one token, because of the test we just made.
  % This is a good thing, since \splitoff doesn't work given nothing at
  % This is a good thing, since \splitoff doesn't work given nothing at
  % all -- the first parameter is undelimited.)
  % all -- the first parameter is undelimited.)
  \expandafter\splitoff\thearg\endmark
  \expandafter\splitoff\thearg\endmark
  \ifx\rest\empty
  \ifx\rest\empty
    % Only one token in the argument.  It could still be anything.
    % Only one token in the argument.  It could still be anything.
    % A ``lowercase letter'' is one whose \lccode is nonzero.
    % A ``lowercase letter'' is one whose \lccode is nonzero.
    % An ``uppercase letter'' is one whose \lccode is both nonzero, and
    % An ``uppercase letter'' is one whose \lccode is both nonzero, and
    %   not equal to itself.
    %   not equal to itself.
    % Otherwise, we assume it's a number.
    % Otherwise, we assume it's a number.
    %
    %
    % We need the \relax at the end of the \ifnum lines to stop TeX from
    % We need the \relax at the end of the \ifnum lines to stop TeX from
    % continuing to look for a <number>.
    % continuing to look for a <number>.
    %
    %
    \ifnum\lccode\expandafter`\thearg=0\relax
    \ifnum\lccode\expandafter`\thearg=0\relax
      \numericenumerate % a number (we hope)
      \numericenumerate % a number (we hope)
    \else
    \else
      % It's a letter.
      % It's a letter.
      \ifnum\lccode\expandafter`\thearg=\expandafter`\thearg\relax
      \ifnum\lccode\expandafter`\thearg=\expandafter`\thearg\relax
        \lowercaseenumerate % lowercase letter
        \lowercaseenumerate % lowercase letter
      \else
      \else
        \uppercaseenumerate % uppercase letter
        \uppercaseenumerate % uppercase letter
      \fi
      \fi
    \fi
    \fi
  \else
  \else
    % Multiple tokens in the argument.  We hope it's a number.
    % Multiple tokens in the argument.  We hope it's a number.
    \numericenumerate
    \numericenumerate
  \fi
  \fi
}
}
 
 
% An @enumerate whose labels are integers.  The starting integer is
% An @enumerate whose labels are integers.  The starting integer is
% given in \thearg.
% given in \thearg.
%
%
\def\numericenumerate{%
\def\numericenumerate{%
  \itemno = \thearg
  \itemno = \thearg
  \startenumeration{\the\itemno}%
  \startenumeration{\the\itemno}%
}
}
 
 
% The starting (lowercase) letter is in \thearg.
% The starting (lowercase) letter is in \thearg.
\def\lowercaseenumerate{%
\def\lowercaseenumerate{%
  \itemno = \expandafter`\thearg
  \itemno = \expandafter`\thearg
  \startenumeration{%
  \startenumeration{%
    % Be sure we're not beyond the end of the alphabet.
    % Be sure we're not beyond the end of the alphabet.
    \ifnum\itemno=0
    \ifnum\itemno=0
      \errmessage{No more lowercase letters in @enumerate; get a bigger
      \errmessage{No more lowercase letters in @enumerate; get a bigger
                  alphabet}%
                  alphabet}%
    \fi
    \fi
    \char\lccode\itemno
    \char\lccode\itemno
  }%
  }%
}
}
 
 
% The starting (uppercase) letter is in \thearg.
% The starting (uppercase) letter is in \thearg.
\def\uppercaseenumerate{%
\def\uppercaseenumerate{%
  \itemno = \expandafter`\thearg
  \itemno = \expandafter`\thearg
  \startenumeration{%
  \startenumeration{%
    % Be sure we're not beyond the end of the alphabet.
    % Be sure we're not beyond the end of the alphabet.
    \ifnum\itemno=0
    \ifnum\itemno=0
      \errmessage{No more uppercase letters in @enumerate; get a bigger
      \errmessage{No more uppercase letters in @enumerate; get a bigger
                  alphabet}
                  alphabet}
    \fi
    \fi
    \char\uccode\itemno
    \char\uccode\itemno
  }%
  }%
}
}
 
 
% Call itemizey, adding a period to the first argument and supplying the
% Call itemizey, adding a period to the first argument and supplying the
% common last two arguments.  Also subtract one from the initial value in
% common last two arguments.  Also subtract one from the initial value in
% \itemno, since @item increments \itemno.
% \itemno, since @item increments \itemno.
%
%
\def\startenumeration#1{%
\def\startenumeration#1{%
  \advance\itemno by -1
  \advance\itemno by -1
  \itemizey{#1.}\Eenumerate\flushcr
  \itemizey{#1.}\Eenumerate\flushcr
}
}
 
 
% @alphaenumerate and @capsenumerate are abbreviations for giving an arg
% @alphaenumerate and @capsenumerate are abbreviations for giving an arg
% to @enumerate.
% to @enumerate.
%
%
\def\alphaenumerate{\enumerate{a}}
\def\alphaenumerate{\enumerate{a}}
\def\capsenumerate{\enumerate{A}}
\def\capsenumerate{\enumerate{A}}
\def\Ealphaenumerate{\Eenumerate}
\def\Ealphaenumerate{\Eenumerate}
\def\Ecapsenumerate{\Eenumerate}
\def\Ecapsenumerate{\Eenumerate}
 
 
% Definition of @item while inside @itemize.
% Definition of @item while inside @itemize.
 
 
\def\itemizeitem{%
\def\itemizeitem{%
\advance\itemno by 1
\advance\itemno by 1
{\let\par=\endgraf \smallbreak}%
{\let\par=\endgraf \smallbreak}%
\ifhmode \errmessage{In hmode at itemizeitem}\fi
\ifhmode \errmessage{In hmode at itemizeitem}\fi
{\parskip=0in \hskip 0pt
{\parskip=0in \hskip 0pt
\hbox to 0pt{\hss \itemcontents\hskip \itemmargin}%
\hbox to 0pt{\hss \itemcontents\hskip \itemmargin}%
\vadjust{\penalty 1200}}%
\vadjust{\penalty 1200}}%
\flushcr}
\flushcr}
 
 
% @multitable macros
% @multitable macros
% Amy Hendrickson, 8/18/94, 3/6/96
% Amy Hendrickson, 8/18/94, 3/6/96
%
%
% @multitable ... @end multitable will make as many columns as desired.
% @multitable ... @end multitable will make as many columns as desired.
% Contents of each column will wrap at width given in preamble.  Width
% Contents of each column will wrap at width given in preamble.  Width
% can be specified either with sample text given in a template line,
% can be specified either with sample text given in a template line,
% or in percent of \hsize, the current width of text on page.
% or in percent of \hsize, the current width of text on page.
 
 
% Table can continue over pages but will only break between lines.
% Table can continue over pages but will only break between lines.
 
 
% To make preamble:
% To make preamble:
%
%
% Either define widths of columns in terms of percent of \hsize:
% Either define widths of columns in terms of percent of \hsize:
%   @multitable @columnfractions .25 .3 .45
%   @multitable @columnfractions .25 .3 .45
%   @item ...
%   @item ...
%
%
%   Numbers following @columnfractions are the percent of the total
%   Numbers following @columnfractions are the percent of the total
%   current hsize to be used for each column. You may use as many
%   current hsize to be used for each column. You may use as many
%   columns as desired.
%   columns as desired.
 
 
 
 
% Or use a template:
% Or use a template:
%   @multitable {Column 1 template} {Column 2 template} {Column 3 template}
%   @multitable {Column 1 template} {Column 2 template} {Column 3 template}
%   @item ...
%   @item ...
%   using the widest term desired in each column.
%   using the widest term desired in each column.
%
%
% For those who want to use more than one line's worth of words in
% For those who want to use more than one line's worth of words in
% the preamble, break the line within one argument and it
% the preamble, break the line within one argument and it
% will parse correctly, i.e.,
% will parse correctly, i.e.,
%
%
%     @multitable {Column 1 template} {Column 2 template} {Column 3
%     @multitable {Column 1 template} {Column 2 template} {Column 3
%      template}
%      template}
% Not:
% Not:
%     @multitable {Column 1 template} {Column 2 template}
%     @multitable {Column 1 template} {Column 2 template}
%      {Column 3 template}
%      {Column 3 template}
 
 
% Each new table line starts with @item, each subsequent new column
% Each new table line starts with @item, each subsequent new column
% starts with @tab. Empty columns may be produced by supplying @tab's
% starts with @tab. Empty columns may be produced by supplying @tab's
% with nothing between them for as many times as empty columns are needed,
% with nothing between them for as many times as empty columns are needed,
% ie, @tab@tab@tab will produce two empty columns.
% ie, @tab@tab@tab will produce two empty columns.
 
 
% @item, @tab, @multitable or @end multitable do not need to be on their
% @item, @tab, @multitable or @end multitable do not need to be on their
% own lines, but it will not hurt if they are.
% own lines, but it will not hurt if they are.
 
 
% Sample multitable:
% Sample multitable:
 
 
%   @multitable {Column 1 template} {Column 2 template} {Column 3 template}
%   @multitable {Column 1 template} {Column 2 template} {Column 3 template}
%   @item first col stuff @tab second col stuff @tab third col
%   @item first col stuff @tab second col stuff @tab third col
%   @item
%   @item
%   first col stuff
%   first col stuff
%   @tab
%   @tab
%   second col stuff
%   second col stuff
%   @tab
%   @tab
%   third col
%   third col
%   @item first col stuff @tab second col stuff
%   @item first col stuff @tab second col stuff
%   @tab Many paragraphs of text may be used in any column.
%   @tab Many paragraphs of text may be used in any column.
%
%
%         They will wrap at the width determined by the template.
%         They will wrap at the width determined by the template.
%   @item@tab@tab This will be in third column.
%   @item@tab@tab This will be in third column.
%   @end multitable
%   @end multitable
 
 
% Default dimensions may be reset by user.
% Default dimensions may be reset by user.
% @multitableparskip is vertical space between paragraphs in table.
% @multitableparskip is vertical space between paragraphs in table.
% @multitableparindent is paragraph indent in table.
% @multitableparindent is paragraph indent in table.
% @multitablecolmargin is horizontal space to be left between columns.
% @multitablecolmargin is horizontal space to be left between columns.
% @multitablelinespace is space to leave between table items, baseline
% @multitablelinespace is space to leave between table items, baseline
%                                                            to baseline.
%                                                            to baseline.
%   0pt means it depends on current normal line spacing.
%   0pt means it depends on current normal line spacing.
%
%
\newskip\multitableparskip
\newskip\multitableparskip
\newskip\multitableparindent
\newskip\multitableparindent
\newdimen\multitablecolspace
\newdimen\multitablecolspace
\newskip\multitablelinespace
\newskip\multitablelinespace
\multitableparskip=0pt
\multitableparskip=0pt
\multitableparindent=6pt
\multitableparindent=6pt
\multitablecolspace=12pt
\multitablecolspace=12pt
\multitablelinespace=0pt
\multitablelinespace=0pt
 
 
% Macros used to set up halign preamble:
% Macros used to set up halign preamble:
%
%
\let\endsetuptable\relax
\let\endsetuptable\relax
\def\xendsetuptable{\endsetuptable}
\def\xendsetuptable{\endsetuptable}
\let\columnfractions\relax
\let\columnfractions\relax
\def\xcolumnfractions{\columnfractions}
\def\xcolumnfractions{\columnfractions}
\newif\ifsetpercent
\newif\ifsetpercent
 
 
% 2/1/96, to allow fractions to be given with more than one digit.
% 2/1/96, to allow fractions to be given with more than one digit.
\def\pickupwholefraction#1 {\global\advance\colcount by1 %
\def\pickupwholefraction#1 {\global\advance\colcount by1 %
\expandafter\xdef\csname col\the\colcount\endcsname{.#1\hsize}%
\expandafter\xdef\csname col\the\colcount\endcsname{.#1\hsize}%
\setuptable}
\setuptable}
 
 
\newcount\colcount
\newcount\colcount
\def\setuptable#1{\def\firstarg{#1}%
\def\setuptable#1{\def\firstarg{#1}%
\ifx\firstarg\xendsetuptable\let\go\relax%
\ifx\firstarg\xendsetuptable\let\go\relax%
\else
\else
  \ifx\firstarg\xcolumnfractions\global\setpercenttrue%
  \ifx\firstarg\xcolumnfractions\global\setpercenttrue%
  \else
  \else
    \ifsetpercent
    \ifsetpercent
       \let\go\pickupwholefraction   % In this case arg of setuptable
       \let\go\pickupwholefraction   % In this case arg of setuptable
                                     % is the decimal point before the
                                     % is the decimal point before the
                                     % number given in percent of hsize.
                                     % number given in percent of hsize.
                                     % We don't need this so we don't use it.
                                     % We don't need this so we don't use it.
    \else
    \else
       \global\advance\colcount by1
       \global\advance\colcount by1
       \setbox0=\hbox{#1 }% Add a normal word space as a separator;
       \setbox0=\hbox{#1 }% Add a normal word space as a separator;
                          % typically that is always in the input, anyway.
                          % typically that is always in the input, anyway.
       \expandafter\xdef\csname col\the\colcount\endcsname{\the\wd0}%
       \expandafter\xdef\csname col\the\colcount\endcsname{\the\wd0}%
    \fi%
    \fi%
  \fi%
  \fi%
\ifx\go\pickupwholefraction\else\let\go\setuptable\fi%
\ifx\go\pickupwholefraction\else\let\go\setuptable\fi%
\fi\go}
\fi\go}
 
 
% multitable syntax
% multitable syntax
\def\tab{&\hskip1sp\relax} % 2/2/96
\def\tab{&\hskip1sp\relax} % 2/2/96
                           % tiny skip here makes sure this column space is
                           % tiny skip here makes sure this column space is
                           % maintained, even if it is never used.
                           % maintained, even if it is never used.
 
 
% @multitable ... @end multitable definitions:
% @multitable ... @end multitable definitions:
 
 
\def\multitable{\parsearg\dotable}
\def\multitable{\parsearg\dotable}
\def\dotable#1{\bgroup
\def\dotable#1{\bgroup
  \vskip\parskip
  \vskip\parskip
  \let\item\crcr
  \let\item\crcr
  \tolerance=9500
  \tolerance=9500
  \hbadness=9500
  \hbadness=9500
  \setmultitablespacing
  \setmultitablespacing
  \parskip=\multitableparskip
  \parskip=\multitableparskip
  \parindent=\multitableparindent
  \parindent=\multitableparindent
  \overfullrule=0pt
  \overfullrule=0pt
  \global\colcount=0
  \global\colcount=0
  \def\Emultitable{\global\setpercentfalse\cr\egroup\egroup}%
  \def\Emultitable{\global\setpercentfalse\cr\egroup\egroup}%
  %
  %
  % To parse everything between @multitable and @item:
  % To parse everything between @multitable and @item:
  \setuptable#1 \endsetuptable
  \setuptable#1 \endsetuptable
  %
  %
  % \everycr will reset column counter, \colcount, at the end of
  % \everycr will reset column counter, \colcount, at the end of
  % each line. Every column entry will cause \colcount to advance by one.
  % each line. Every column entry will cause \colcount to advance by one.
  % The table preamble
  % The table preamble
  % looks at the current \colcount to find the correct column width.
  % looks at the current \colcount to find the correct column width.
  \everycr{\noalign{%
  \everycr{\noalign{%
  %
  %
  % \filbreak%% keeps underfull box messages off when table breaks over pages.
  % \filbreak%% keeps underfull box messages off when table breaks over pages.
  % Maybe so, but it also creates really weird page breaks when the table
  % Maybe so, but it also creates really weird page breaks when the table
  % breaks over pages. Wouldn't \vfil be better?  Wait until the problem
  % breaks over pages. Wouldn't \vfil be better?  Wait until the problem
  % manifests itself, so it can be fixed for real --karl.
  % manifests itself, so it can be fixed for real --karl.
    \global\colcount=0\relax}}%
    \global\colcount=0\relax}}%
  %
  %
  % This preamble sets up a generic column definition, which will
  % This preamble sets up a generic column definition, which will
  % be used as many times as user calls for columns.
  % be used as many times as user calls for columns.
  % \vtop will set a single line and will also let text wrap and
  % \vtop will set a single line and will also let text wrap and
  % continue for many paragraphs if desired.
  % continue for many paragraphs if desired.
  \halign\bgroup&\global\advance\colcount by 1\relax
  \halign\bgroup&\global\advance\colcount by 1\relax
    \multistrut\vtop{\hsize=\expandafter\csname col\the\colcount\endcsname
    \multistrut\vtop{\hsize=\expandafter\csname col\the\colcount\endcsname
  %
  %
  % In order to keep entries from bumping into each other
  % In order to keep entries from bumping into each other
  % we will add a \leftskip of \multitablecolspace to all columns after
  % we will add a \leftskip of \multitablecolspace to all columns after
  % the first one.
  % the first one.
  %
  %
  % If a template has been used, we will add \multitablecolspace
  % If a template has been used, we will add \multitablecolspace
  % to the width of each template entry.
  % to the width of each template entry.
  %
  %
  % If the user has set preamble in terms of percent of \hsize we will
  % If the user has set preamble in terms of percent of \hsize we will
  % use that dimension as the width of the column, and the \leftskip
  % use that dimension as the width of the column, and the \leftskip
  % will keep entries from bumping into each other.  Table will start at
  % will keep entries from bumping into each other.  Table will start at
  % left margin and final column will justify at right margin.
  % left margin and final column will justify at right margin.
  %
  %
  % Make sure we don't inherit \rightskip from the outer environment.
  % Make sure we don't inherit \rightskip from the outer environment.
  \rightskip=0pt
  \rightskip=0pt
  \ifnum\colcount=1
  \ifnum\colcount=1
    % The first column will be indented with the surrounding text.
    % The first column will be indented with the surrounding text.
    \advance\hsize by\leftskip
    \advance\hsize by\leftskip
  \else
  \else
    \ifsetpercent \else
    \ifsetpercent \else
      % If user has not set preamble in terms of percent of \hsize
      % If user has not set preamble in terms of percent of \hsize
      % we will advance \hsize by \multitablecolspace.
      % we will advance \hsize by \multitablecolspace.
      \advance\hsize by \multitablecolspace
      \advance\hsize by \multitablecolspace
    \fi
    \fi
   % In either case we will make \leftskip=\multitablecolspace:
   % In either case we will make \leftskip=\multitablecolspace:
  \leftskip=\multitablecolspace
  \leftskip=\multitablecolspace
  \fi
  \fi
  % Ignoring space at the beginning and end avoids an occasional spurious
  % Ignoring space at the beginning and end avoids an occasional spurious
  % blank line, when TeX decides to break the line at the space before the
  % blank line, when TeX decides to break the line at the space before the
  % box from the multistrut, so the strut ends up on a line by itself.
  % box from the multistrut, so the strut ends up on a line by itself.
  % For example:
  % For example:
  % @multitable @columnfractions .11 .89
  % @multitable @columnfractions .11 .89
  % @item @code{#}
  % @item @code{#}
  % @tab Legal holiday which is valid in major parts of the whole country.
  % @tab Legal holiday which is valid in major parts of the whole country.
  % Is automatically provided with highlighting sequences respectively marking
  % Is automatically provided with highlighting sequences respectively marking
  % characters.
  % characters.
  \noindent\ignorespaces##\unskip\multistrut}\cr
  \noindent\ignorespaces##\unskip\multistrut}\cr
}
}
 
 
\def\setmultitablespacing{% test to see if user has set \multitablelinespace.
\def\setmultitablespacing{% test to see if user has set \multitablelinespace.
% If so, do nothing. If not, give it an appropriate dimension based on
% If so, do nothing. If not, give it an appropriate dimension based on
% current baselineskip.
% current baselineskip.
\ifdim\multitablelinespace=0pt
\ifdim\multitablelinespace=0pt
%% strut to put in table in case some entry doesn't have descenders,
%% strut to put in table in case some entry doesn't have descenders,
%% to keep lines equally spaced
%% to keep lines equally spaced
\let\multistrut = \strut
\let\multistrut = \strut
%% Test to see if parskip is larger than space between lines of
%% Test to see if parskip is larger than space between lines of
%% table. If not, do nothing.
%% table. If not, do nothing.
%%        If so, set to same dimension as multitablelinespace.
%%        If so, set to same dimension as multitablelinespace.
\else
\else
\gdef\multistrut{\vrule height\multitablelinespace depth\dp0
\gdef\multistrut{\vrule height\multitablelinespace depth\dp0
width0pt\relax} \fi
width0pt\relax} \fi
\ifdim\multitableparskip>\multitablelinespace
\ifdim\multitableparskip>\multitablelinespace
\global\multitableparskip=\multitablelinespace
\global\multitableparskip=\multitablelinespace
\global\advance\multitableparskip-7pt %% to keep parskip somewhat smaller
\global\advance\multitableparskip-7pt %% to keep parskip somewhat smaller
                                      %% than skip between lines in the table.
                                      %% than skip between lines in the table.
\fi%
\fi%
\ifdim\multitableparskip=0pt
\ifdim\multitableparskip=0pt
\global\multitableparskip=\multitablelinespace
\global\multitableparskip=\multitablelinespace
\global\advance\multitableparskip-7pt %% to keep parskip somewhat smaller
\global\advance\multitableparskip-7pt %% to keep parskip somewhat smaller
                                      %% than skip between lines in the table.
                                      %% than skip between lines in the table.
\fi}
\fi}
 
 
 
 
\message{indexing,}
\message{indexing,}
% Index generation facilities
% Index generation facilities
 
 
% Define \newwrite to be identical to plain tex's \newwrite
% Define \newwrite to be identical to plain tex's \newwrite
% except not \outer, so it can be used within \newindex.
% except not \outer, so it can be used within \newindex.
{\catcode`\@=11
{\catcode`\@=11
\gdef\newwrite{\alloc@7\write\chardef\sixt@@n}}
\gdef\newwrite{\alloc@7\write\chardef\sixt@@n}}
 
 
% \newindex {foo} defines an index named foo.
% \newindex {foo} defines an index named foo.
% It automatically defines \fooindex such that
% It automatically defines \fooindex such that
% \fooindex ...rest of line... puts an entry in the index foo.
% \fooindex ...rest of line... puts an entry in the index foo.
% It also defines \fooindfile to be the number of the output channel for
% It also defines \fooindfile to be the number of the output channel for
% the file that accumulates this index.  The file's extension is foo.
% the file that accumulates this index.  The file's extension is foo.
% The name of an index should be no more than 2 characters long
% The name of an index should be no more than 2 characters long
% for the sake of vms.
% for the sake of vms.
%
%
\def\newindex#1{%
\def\newindex#1{%
  \iflinks
  \iflinks
    \expandafter\newwrite \csname#1indfile\endcsname
    \expandafter\newwrite \csname#1indfile\endcsname
    \openout \csname#1indfile\endcsname \jobname.#1 % Open the file
    \openout \csname#1indfile\endcsname \jobname.#1 % Open the file
  \fi
  \fi
  \expandafter\xdef\csname#1index\endcsname{%     % Define @#1index
  \expandafter\xdef\csname#1index\endcsname{%     % Define @#1index
    \noexpand\doindex{#1}}
    \noexpand\doindex{#1}}
}
}
 
 
% @defindex foo  ==  \newindex{foo}
% @defindex foo  ==  \newindex{foo}
 
 
\def\defindex{\parsearg\newindex}
\def\defindex{\parsearg\newindex}
 
 
% Define @defcodeindex, like @defindex except put all entries in @code.
% Define @defcodeindex, like @defindex except put all entries in @code.
 
 
\def\newcodeindex#1{%
\def\newcodeindex#1{%
  \iflinks
  \iflinks
    \expandafter\newwrite \csname#1indfile\endcsname
    \expandafter\newwrite \csname#1indfile\endcsname
    \openout \csname#1indfile\endcsname \jobname.#1
    \openout \csname#1indfile\endcsname \jobname.#1
  \fi
  \fi
  \expandafter\xdef\csname#1index\endcsname{%
  \expandafter\xdef\csname#1index\endcsname{%
    \noexpand\docodeindex{#1}}
    \noexpand\docodeindex{#1}}
}
}
 
 
\def\defcodeindex{\parsearg\newcodeindex}
\def\defcodeindex{\parsearg\newcodeindex}
 
 
% @synindex foo bar    makes index foo feed into index bar.
% @synindex foo bar    makes index foo feed into index bar.
% Do this instead of @defindex foo if you don't want it as a separate index.
% Do this instead of @defindex foo if you don't want it as a separate index.
% The \closeout helps reduce unnecessary open files; the limit on the
% The \closeout helps reduce unnecessary open files; the limit on the
% Acorn RISC OS is a mere 16 files.
% Acorn RISC OS is a mere 16 files.
\def\synindex#1 #2 {%
\def\synindex#1 #2 {%
  \expandafter\let\expandafter\synindexfoo\expandafter=\csname#2indfile\endcsname
  \expandafter\let\expandafter\synindexfoo\expandafter=\csname#2indfile\endcsname
  \expandafter\closeout\csname#1indfile\endcsname
  \expandafter\closeout\csname#1indfile\endcsname
  \expandafter\let\csname#1indfile\endcsname=\synindexfoo
  \expandafter\let\csname#1indfile\endcsname=\synindexfoo
  \expandafter\xdef\csname#1index\endcsname{% define \xxxindex
  \expandafter\xdef\csname#1index\endcsname{% define \xxxindex
    \noexpand\doindex{#2}}%
    \noexpand\doindex{#2}}%
}
}
 
 
% @syncodeindex foo bar   similar, but put all entries made for index foo
% @syncodeindex foo bar   similar, but put all entries made for index foo
% inside @code.
% inside @code.
\def\syncodeindex#1 #2 {%
\def\syncodeindex#1 #2 {%
  \expandafter\let\expandafter\synindexfoo\expandafter=\csname#2indfile\endcsname
  \expandafter\let\expandafter\synindexfoo\expandafter=\csname#2indfile\endcsname
  \expandafter\closeout\csname#1indfile\endcsname
  \expandafter\closeout\csname#1indfile\endcsname
  \expandafter\let\csname#1indfile\endcsname=\synindexfoo
  \expandafter\let\csname#1indfile\endcsname=\synindexfoo
  \expandafter\xdef\csname#1index\endcsname{% define \xxxindex
  \expandafter\xdef\csname#1index\endcsname{% define \xxxindex
    \noexpand\docodeindex{#2}}%
    \noexpand\docodeindex{#2}}%
}
}
 
 
% Define \doindex, the driver for all \fooindex macros.
% Define \doindex, the driver for all \fooindex macros.
% Argument #1 is generated by the calling \fooindex macro,
% Argument #1 is generated by the calling \fooindex macro,
%  and it is "foo", the name of the index.
%  and it is "foo", the name of the index.
 
 
% \doindex just uses \parsearg; it calls \doind for the actual work.
% \doindex just uses \parsearg; it calls \doind for the actual work.
% This is because \doind is more useful to call from other macros.
% This is because \doind is more useful to call from other macros.
 
 
% There is also \dosubind {index}{topic}{subtopic}
% There is also \dosubind {index}{topic}{subtopic}
% which makes an entry in a two-level index such as the operation index.
% which makes an entry in a two-level index such as the operation index.
 
 
\def\doindex#1{\edef\indexname{#1}\parsearg\singleindexer}
\def\doindex#1{\edef\indexname{#1}\parsearg\singleindexer}
\def\singleindexer #1{\doind{\indexname}{#1}}
\def\singleindexer #1{\doind{\indexname}{#1}}
 
 
% like the previous two, but they put @code around the argument.
% like the previous two, but they put @code around the argument.
\def\docodeindex#1{\edef\indexname{#1}\parsearg\singlecodeindexer}
\def\docodeindex#1{\edef\indexname{#1}\parsearg\singlecodeindexer}
\def\singlecodeindexer #1{\doind{\indexname}{\code{#1}}}
\def\singlecodeindexer #1{\doind{\indexname}{\code{#1}}}
 
 
\def\indexdummies{%
\def\indexdummies{%
\def\ { }%
\def\ { }%
% Take care of the plain tex accent commands.
% Take care of the plain tex accent commands.
\def\"{\realbackslash "}%
\def\"{\realbackslash "}%
\def\`{\realbackslash `}%
\def\`{\realbackslash `}%
\def\'{\realbackslash '}%
\def\'{\realbackslash '}%
\def\^{\realbackslash ^}%
\def\^{\realbackslash ^}%
\def\~{\realbackslash ~}%
\def\~{\realbackslash ~}%
\def\={\realbackslash =}%
\def\={\realbackslash =}%
\def\b{\realbackslash b}%
\def\b{\realbackslash b}%
\def\c{\realbackslash c}%
\def\c{\realbackslash c}%
\def\d{\realbackslash d}%
\def\d{\realbackslash d}%
\def\u{\realbackslash u}%
\def\u{\realbackslash u}%
\def\v{\realbackslash v}%
\def\v{\realbackslash v}%
\def\H{\realbackslash H}%
\def\H{\realbackslash H}%
% Take care of the plain tex special European modified letters.
% Take care of the plain tex special European modified letters.
\def\oe{\realbackslash oe}%
\def\oe{\realbackslash oe}%
\def\ae{\realbackslash ae}%
\def\ae{\realbackslash ae}%
\def\aa{\realbackslash aa}%
\def\aa{\realbackslash aa}%
\def\OE{\realbackslash OE}%
\def\OE{\realbackslash OE}%
\def\AE{\realbackslash AE}%
\def\AE{\realbackslash AE}%
\def\AA{\realbackslash AA}%
\def\AA{\realbackslash AA}%
\def\o{\realbackslash o}%
\def\o{\realbackslash o}%
\def\O{\realbackslash O}%
\def\O{\realbackslash O}%
\def\l{\realbackslash l}%
\def\l{\realbackslash l}%
\def\L{\realbackslash L}%
\def\L{\realbackslash L}%
\def\ss{\realbackslash ss}%
\def\ss{\realbackslash ss}%
% Take care of texinfo commands likely to appear in an index entry.
% Take care of texinfo commands likely to appear in an index entry.
% (Must be a way to avoid doing expansion at all, and thus not have to
% (Must be a way to avoid doing expansion at all, and thus not have to
% laboriously list every single command here.)
% laboriously list every single command here.)
\def\@{@}% will be @@ when we switch to @ as escape char.
\def\@{@}% will be @@ when we switch to @ as escape char.
%\let\{ = \lbracecmd
%\let\{ = \lbracecmd
%\let\} = \rbracecmd
%\let\} = \rbracecmd
\def\_{{\realbackslash _}}%
\def\_{{\realbackslash _}}%
\def\w{\realbackslash w }%
\def\w{\realbackslash w }%
\def\bf{\realbackslash bf }%
\def\bf{\realbackslash bf }%
%\def\rm{\realbackslash rm }%
%\def\rm{\realbackslash rm }%
\def\sl{\realbackslash sl }%
\def\sl{\realbackslash sl }%
\def\sf{\realbackslash sf}%
\def\sf{\realbackslash sf}%
\def\tt{\realbackslash tt}%
\def\tt{\realbackslash tt}%
\def\gtr{\realbackslash gtr}%
\def\gtr{\realbackslash gtr}%
\def\less{\realbackslash less}%
\def\less{\realbackslash less}%
\def\hat{\realbackslash hat}%
\def\hat{\realbackslash hat}%
\def\TeX{\realbackslash TeX}%
\def\TeX{\realbackslash TeX}%
\def\dots{\realbackslash dots }%
\def\dots{\realbackslash dots }%
\def\result{\realbackslash result}%
\def\result{\realbackslash result}%
\def\equiv{\realbackslash equiv}%
\def\equiv{\realbackslash equiv}%
\def\expansion{\realbackslash expansion}%
\def\expansion{\realbackslash expansion}%
\def\print{\realbackslash print}%
\def\print{\realbackslash print}%
\def\error{\realbackslash error}%
\def\error{\realbackslash error}%
\def\point{\realbackslash point}%
\def\point{\realbackslash point}%
\def\copyright{\realbackslash copyright}%
\def\copyright{\realbackslash copyright}%
\def\tclose##1{\realbackslash tclose {##1}}%
\def\tclose##1{\realbackslash tclose {##1}}%
\def\code##1{\realbackslash code {##1}}%
\def\code##1{\realbackslash code {##1}}%
\def\dotless##1{\realbackslash dotless {##1}}%
\def\dotless##1{\realbackslash dotless {##1}}%
\def\samp##1{\realbackslash samp {##1}}%
\def\samp##1{\realbackslash samp {##1}}%
\def\,##1{\realbackslash ,{##1}}%
\def\,##1{\realbackslash ,{##1}}%
\def\t##1{\realbackslash t {##1}}%
\def\t##1{\realbackslash t {##1}}%
\def\r##1{\realbackslash r {##1}}%
\def\r##1{\realbackslash r {##1}}%
\def\i##1{\realbackslash i {##1}}%
\def\i##1{\realbackslash i {##1}}%
\def\b##1{\realbackslash b {##1}}%
\def\b##1{\realbackslash b {##1}}%
\def\sc##1{\realbackslash sc {##1}}%
\def\sc##1{\realbackslash sc {##1}}%
\def\cite##1{\realbackslash cite {##1}}%
\def\cite##1{\realbackslash cite {##1}}%
\def\key##1{\realbackslash key {##1}}%
\def\key##1{\realbackslash key {##1}}%
\def\file##1{\realbackslash file {##1}}%
\def\file##1{\realbackslash file {##1}}%
\def\var##1{\realbackslash var {##1}}%
\def\var##1{\realbackslash var {##1}}%
\def\kbd##1{\realbackslash kbd {##1}}%
\def\kbd##1{\realbackslash kbd {##1}}%
\def\dfn##1{\realbackslash dfn {##1}}%
\def\dfn##1{\realbackslash dfn {##1}}%
\def\emph##1{\realbackslash emph {##1}}%
\def\emph##1{\realbackslash emph {##1}}%
%
%
% Handle some cases of @value -- where the variable name does not
% Handle some cases of @value -- where the variable name does not
% contain - or _, and the value does not contain any
% contain - or _, and the value does not contain any
% (non-fully-expandable) commands.
% (non-fully-expandable) commands.
\let\value = \expandablevalue
\let\value = \expandablevalue
%
%
\unsepspaces
\unsepspaces
}
}
 
 
% If an index command is used in an @example environment, any spaces
% If an index command is used in an @example environment, any spaces
% therein should become regular spaces in the raw index file, not the
% therein should become regular spaces in the raw index file, not the
% expansion of \tie (\\leavevmode \penalty \@M \ ).
% expansion of \tie (\\leavevmode \penalty \@M \ ).
{\obeyspaces
{\obeyspaces
 \gdef\unsepspaces{\obeyspaces\let =\space}}
 \gdef\unsepspaces{\obeyspaces\let =\space}}
 
 
% \indexnofonts no-ops all font-change commands.
% \indexnofonts no-ops all font-change commands.
% This is used when outputting the strings to sort the index by.
% This is used when outputting the strings to sort the index by.
\def\indexdummyfont#1{#1}
\def\indexdummyfont#1{#1}
\def\indexdummytex{TeX}
\def\indexdummytex{TeX}
\def\indexdummydots{...}
\def\indexdummydots{...}
 
 
\def\indexnofonts{%
\def\indexnofonts{%
% Just ignore accents.
% Just ignore accents.
\let\,=\indexdummyfont
\let\,=\indexdummyfont
\let\"=\indexdummyfont
\let\"=\indexdummyfont
\let\`=\indexdummyfont
\let\`=\indexdummyfont
\let\'=\indexdummyfont
\let\'=\indexdummyfont
\let\^=\indexdummyfont
\let\^=\indexdummyfont
\let\~=\indexdummyfont
\let\~=\indexdummyfont
\let\==\indexdummyfont
\let\==\indexdummyfont
\let\b=\indexdummyfont
\let\b=\indexdummyfont
\let\c=\indexdummyfont
\let\c=\indexdummyfont
\let\d=\indexdummyfont
\let\d=\indexdummyfont
\let\u=\indexdummyfont
\let\u=\indexdummyfont
\let\v=\indexdummyfont
\let\v=\indexdummyfont
\let\H=\indexdummyfont
\let\H=\indexdummyfont
\let\dotless=\indexdummyfont
\let\dotless=\indexdummyfont
% Take care of the plain tex special European modified letters.
% Take care of the plain tex special European modified letters.
\def\oe{oe}%
\def\oe{oe}%
\def\ae{ae}%
\def\ae{ae}%
\def\aa{aa}%
\def\aa{aa}%
\def\OE{OE}%
\def\OE{OE}%
\def\AE{AE}%
\def\AE{AE}%
\def\AA{AA}%
\def\AA{AA}%
\def\o{o}%
\def\o{o}%
\def\O{O}%
\def\O{O}%
\def\l{l}%
\def\l{l}%
\def\L{L}%
\def\L{L}%
\def\ss{ss}%
\def\ss{ss}%
\let\w=\indexdummyfont
\let\w=\indexdummyfont
\let\t=\indexdummyfont
\let\t=\indexdummyfont
\let\r=\indexdummyfont
\let\r=\indexdummyfont
\let\i=\indexdummyfont
\let\i=\indexdummyfont
\let\b=\indexdummyfont
\let\b=\indexdummyfont
\let\emph=\indexdummyfont
\let\emph=\indexdummyfont
\let\strong=\indexdummyfont
\let\strong=\indexdummyfont
\let\cite=\indexdummyfont
\let\cite=\indexdummyfont
\let\sc=\indexdummyfont
\let\sc=\indexdummyfont
%Don't no-op \tt, since it isn't a user-level command
%Don't no-op \tt, since it isn't a user-level command
% and is used in the definitions of the active chars like <, >, |...
% and is used in the definitions of the active chars like <, >, |...
%\let\tt=\indexdummyfont
%\let\tt=\indexdummyfont
\let\tclose=\indexdummyfont
\let\tclose=\indexdummyfont
\let\code=\indexdummyfont
\let\code=\indexdummyfont
\let\file=\indexdummyfont
\let\file=\indexdummyfont
\let\samp=\indexdummyfont
\let\samp=\indexdummyfont
\let\kbd=\indexdummyfont
\let\kbd=\indexdummyfont
\let\key=\indexdummyfont
\let\key=\indexdummyfont
\let\var=\indexdummyfont
\let\var=\indexdummyfont
\let\TeX=\indexdummytex
\let\TeX=\indexdummytex
\let\dots=\indexdummydots
\let\dots=\indexdummydots
\def\@{@}%
\def\@{@}%
}
}
 
 
% To define \realbackslash, we must make \ not be an escape.
% To define \realbackslash, we must make \ not be an escape.
% We must first make another character (@) an escape
% We must first make another character (@) an escape
% so we do not become unable to do a definition.
% so we do not become unable to do a definition.
 
 
{\catcode`\@=0 \catcode`\\=\other
{\catcode`\@=0 \catcode`\\=\other
 @gdef@realbackslash{\}}
 @gdef@realbackslash{\}}
 
 
\let\indexbackslash=0  %overridden during \printindex.
\let\indexbackslash=0  %overridden during \printindex.
\let\SETmarginindex=\relax % put index entries in margin (undocumented)?
\let\SETmarginindex=\relax % put index entries in margin (undocumented)?
 
 
% For \ifx comparisons.
% For \ifx comparisons.
\def\emptymacro{\empty}
\def\emptymacro{\empty}
 
 
% Most index entries go through here, but \dosubind is the general case.
% Most index entries go through here, but \dosubind is the general case.
%
%
\def\doind#1#2{\dosubind{#1}{#2}\empty}
\def\doind#1#2{\dosubind{#1}{#2}\empty}
 
 
% Workhorse for all \fooindexes.
% Workhorse for all \fooindexes.
% #1 is name of index, #2 is stuff to put there, #3 is subentry --
% #1 is name of index, #2 is stuff to put there, #3 is subentry --
% \empty if called from \doind, as we usually are.  The main exception
% \empty if called from \doind, as we usually are.  The main exception
% is with defuns, which call us directly.
% is with defuns, which call us directly.
%
%
\def\dosubind#1#2#3{%
\def\dosubind#1#2#3{%
  % Put the index entry in the margin if desired.
  % Put the index entry in the margin if desired.
  \ifx\SETmarginindex\relax\else
  \ifx\SETmarginindex\relax\else
    \insert\margin{\hbox{\vrule height8pt depth3pt width0pt #2}}%
    \insert\margin{\hbox{\vrule height8pt depth3pt width0pt #2}}%
  \fi
  \fi
  {%
  {%
    \count255=\lastpenalty
    \count255=\lastpenalty
    {%
    {%
      \indexdummies % Must do this here, since \bf, etc expand at this stage
      \indexdummies % Must do this here, since \bf, etc expand at this stage
      \escapechar=`\\
      \escapechar=`\\
      {%
      {%
        \let\folio = 0% We will expand all macros now EXCEPT \folio.
        \let\folio = 0% We will expand all macros now EXCEPT \folio.
        \def\rawbackslashxx{\indexbackslash}% \indexbackslash isn't defined now
        \def\rawbackslashxx{\indexbackslash}% \indexbackslash isn't defined now
        % so it will be output as is; and it will print as backslash.
        % so it will be output as is; and it will print as backslash.
        %
        %
        \def\thirdarg{#3}%
        \def\thirdarg{#3}%
        %
        %
        % If third arg is present, precede it with space in sort key.
        % If third arg is present, precede it with space in sort key.
        \ifx\thirdarg\emptymacro
        \ifx\thirdarg\emptymacro
          \let\subentry = \empty
          \let\subentry = \empty
        \else
        \else
          \def\subentry{ #3}%
          \def\subentry{ #3}%
        \fi
        \fi
        %
        %
        % First process the index-string with all font commands turned off
        % First process the index-string with all font commands turned off
        % to get the string to sort by.
        % to get the string to sort by.
        {\indexnofonts \xdef\indexsorttmp{#2\subentry}}%
        {\indexnofonts \xdef\indexsorttmp{#2\subentry}}%
        %
        %
        % Now produce the complete index entry, with both the sort key and the
        % Now produce the complete index entry, with both the sort key and the
        % original text, including any font commands.
        % original text, including any font commands.
        \toks0 = {#2}%
        \toks0 = {#2}%
        \edef\temp{%
        \edef\temp{%
          \write\csname#1indfile\endcsname{%
          \write\csname#1indfile\endcsname{%
            \realbackslash entry{\indexsorttmp}{\folio}{\the\toks0}}%
            \realbackslash entry{\indexsorttmp}{\folio}{\the\toks0}}%
        }%
        }%
        %
        %
        % If third (subentry) arg is present, add it to the index string.
        % If third (subentry) arg is present, add it to the index string.
        \ifx\thirdarg\emptymacro \else
        \ifx\thirdarg\emptymacro \else
          \toks0 = {#3}%
          \toks0 = {#3}%
          \edef\temp{\temp{\the\toks0}}%
          \edef\temp{\temp{\the\toks0}}%
        \fi
        \fi
        %
        %
        % If a skip is the last thing on the list now, preserve it
        % If a skip is the last thing on the list now, preserve it
        % by backing up by \lastskip, doing the \write, then inserting
        % by backing up by \lastskip, doing the \write, then inserting
        % the skip again.  Otherwise, the whatsit generated by the
        % the skip again.  Otherwise, the whatsit generated by the
        % \write will make \lastskip zero.  The result is that sequences
        % \write will make \lastskip zero.  The result is that sequences
        % like this:
        % like this:
        % @end defun
        % @end defun
        % @tindex whatever
        % @tindex whatever
        % @defun ...
        % @defun ...
        % will have extra space inserted, because the \medbreak in the
        % will have extra space inserted, because the \medbreak in the
        % start of the @defun won't see the skip inserted by the @end of
        % start of the @defun won't see the skip inserted by the @end of
        % the previous defun.
        % the previous defun.
        %
        %
        % But don't do any of this if we're not in vertical mode.  We
        % But don't do any of this if we're not in vertical mode.  We
        % don't want to do a \vskip and prematurely end a paragraph.
        % don't want to do a \vskip and prematurely end a paragraph.
        %
        %
        % Avoid page breaks due to these extra skips, too.
        % Avoid page breaks due to these extra skips, too.
        %
        %
        \iflinks
        \iflinks
          \ifvmode
          \ifvmode
            \skip0 = \lastskip
            \skip0 = \lastskip
            \ifdim\lastskip = 0pt \else \nobreak\vskip-\lastskip \fi
            \ifdim\lastskip = 0pt \else \nobreak\vskip-\lastskip \fi
          \fi
          \fi
          %
          %
          \temp % do the write
          \temp % do the write
          %
          %
          %
          %
          \ifvmode \ifdim\skip0 = 0pt \else \nobreak\vskip\skip0 \fi \fi
          \ifvmode \ifdim\skip0 = 0pt \else \nobreak\vskip\skip0 \fi \fi
        \fi
        \fi
      }%
      }%
    }%
    }%
    \penalty\count255
    \penalty\count255
  }%
  }%
}
}
 
 
% The index entry written in the file actually looks like
% The index entry written in the file actually looks like
%  \entry {sortstring}{page}{topic}
%  \entry {sortstring}{page}{topic}
% or
% or
%  \entry {sortstring}{page}{topic}{subtopic}
%  \entry {sortstring}{page}{topic}{subtopic}
% The texindex program reads in these files and writes files
% The texindex program reads in these files and writes files
% containing these kinds of lines:
% containing these kinds of lines:
%  \initial {c}
%  \initial {c}
%     before the first topic whose initial is c
%     before the first topic whose initial is c
%  \entry {topic}{pagelist}
%  \entry {topic}{pagelist}
%     for a topic that is used without subtopics
%     for a topic that is used without subtopics
%  \primary {topic}
%  \primary {topic}
%     for the beginning of a topic that is used with subtopics
%     for the beginning of a topic that is used with subtopics
%  \secondary {subtopic}{pagelist}
%  \secondary {subtopic}{pagelist}
%     for each subtopic.
%     for each subtopic.
 
 
% Define the user-accessible indexing commands
% Define the user-accessible indexing commands
% @findex, @vindex, @kindex, @cindex.
% @findex, @vindex, @kindex, @cindex.
 
 
\def\findex {\fnindex}
\def\findex {\fnindex}
\def\kindex {\kyindex}
\def\kindex {\kyindex}
\def\cindex {\cpindex}
\def\cindex {\cpindex}
\def\vindex {\vrindex}
\def\vindex {\vrindex}
\def\tindex {\tpindex}
\def\tindex {\tpindex}
\def\pindex {\pgindex}
\def\pindex {\pgindex}
 
 
\def\cindexsub {\begingroup\obeylines\cindexsub}
\def\cindexsub {\begingroup\obeylines\cindexsub}
{\obeylines %
{\obeylines %
\gdef\cindexsub "#1" #2^^M{\endgroup %
\gdef\cindexsub "#1" #2^^M{\endgroup %
\dosubind{cp}{#2}{#1}}}
\dosubind{cp}{#2}{#1}}}
 
 
% Define the macros used in formatting output of the sorted index material.
% Define the macros used in formatting output of the sorted index material.
 
 
% @printindex causes a particular index (the ??s file) to get printed.
% @printindex causes a particular index (the ??s file) to get printed.
% It does not print any chapter heading (usually an @unnumbered).
% It does not print any chapter heading (usually an @unnumbered).
%
%
\def\printindex{\parsearg\doprintindex}
\def\printindex{\parsearg\doprintindex}
\def\doprintindex#1{\begingroup
\def\doprintindex#1{\begingroup
  \dobreak \chapheadingskip{10000}%
  \dobreak \chapheadingskip{10000}%
  %
  %
  \indexfonts \rm
  \indexfonts \rm
  \tolerance = 9500
  \tolerance = 9500
  \indexbreaks
  \indexbreaks
  %
  %
  % See if the index file exists and is nonempty.
  % See if the index file exists and is nonempty.
  % Change catcode of @ here so that if the index file contains
  % Change catcode of @ here so that if the index file contains
  % \initial {@}
  % \initial {@}
  % as its first line, TeX doesn't complain about mismatched braces
  % as its first line, TeX doesn't complain about mismatched braces
  % (because it thinks @} is a control sequence).
  % (because it thinks @} is a control sequence).
  \catcode`\@ = 11
  \catcode`\@ = 11
  \openin 1 \jobname.#1s
  \openin 1 \jobname.#1s
  \ifeof 1
  \ifeof 1
    % \enddoublecolumns gets confused if there is no text in the index,
    % \enddoublecolumns gets confused if there is no text in the index,
    % and it loses the chapter title and the aux file entries for the
    % and it loses the chapter title and the aux file entries for the
    % index.  The easiest way to prevent this problem is to make sure
    % index.  The easiest way to prevent this problem is to make sure
    % there is some text.
    % there is some text.
    (Index is nonexistent)
    (Index is nonexistent)
  \else
  \else
    %
    %
    % If the index file exists but is empty, then \openin leaves \ifeof
    % If the index file exists but is empty, then \openin leaves \ifeof
    % false.  We have to make TeX try to read something from the file, so
    % false.  We have to make TeX try to read something from the file, so
    % it can discover if there is anything in it.
    % it can discover if there is anything in it.
    \read 1 to \temp
    \read 1 to \temp
    \ifeof 1
    \ifeof 1
      (Index is empty)
      (Index is empty)
    \else
    \else
      % Index files are almost Texinfo source, but we use \ as the escape
      % Index files are almost Texinfo source, but we use \ as the escape
      % character.  It would be better to use @, but that's too big a change
      % character.  It would be better to use @, but that's too big a change
      % to make right now.
      % to make right now.
      \def\indexbackslash{\rawbackslashxx}%
      \def\indexbackslash{\rawbackslashxx}%
      \catcode`\\ = 0
      \catcode`\\ = 0
      \escapechar = `\\
      \escapechar = `\\
      \begindoublecolumns
      \begindoublecolumns
      \input \jobname.#1s
      \input \jobname.#1s
      \enddoublecolumns
      \enddoublecolumns
    \fi
    \fi
  \fi
  \fi
  \closein 1
  \closein 1
\endgroup}
\endgroup}
 
 
% These macros are used by the sorted index file itself.
% These macros are used by the sorted index file itself.
% Change them to control the appearance of the index.
% Change them to control the appearance of the index.
 
 
\def\initial#1{{%
\def\initial#1{{%
  % Some minor font changes for the special characters.
  % Some minor font changes for the special characters.
  \let\tentt=\sectt \let\tt=\sectt \let\sf=\sectt
  \let\tentt=\sectt \let\tt=\sectt \let\sf=\sectt
  %
  %
  % Remove any glue we may have, we'll be inserting our own.
  % Remove any glue we may have, we'll be inserting our own.
  \removelastskip
  \removelastskip
  %
  %
  % We like breaks before the index initials, so insert a bonus.
  % We like breaks before the index initials, so insert a bonus.
  \penalty -300
  \penalty -300
  %
  %
  % Typeset the initial.  Making this add up to a whole number of
  % Typeset the initial.  Making this add up to a whole number of
  % baselineskips increases the chance of the dots lining up from column
  % baselineskips increases the chance of the dots lining up from column
  % to column.  It still won't often be perfect, because of the stretch
  % to column.  It still won't often be perfect, because of the stretch
  % we need before each entry, but it's better.
  % we need before each entry, but it's better.
  %
  %
  % No shrink because it confuses \balancecolumns.
  % No shrink because it confuses \balancecolumns.
  \vskip 1.67\baselineskip plus .5\baselineskip
  \vskip 1.67\baselineskip plus .5\baselineskip
  \leftline{\secbf #1}%
  \leftline{\secbf #1}%
  \vskip .33\baselineskip plus .1\baselineskip
  \vskip .33\baselineskip plus .1\baselineskip
  %
  %
  % Do our best not to break after the initial.
  % Do our best not to break after the initial.
  \nobreak
  \nobreak
}}
}}
 
 
% This typesets a paragraph consisting of #1, dot leaders, and then #2
% This typesets a paragraph consisting of #1, dot leaders, and then #2
% flush to the right margin.  It is used for index and table of contents
% flush to the right margin.  It is used for index and table of contents
% entries.  The paragraph is indented by \leftskip.
% entries.  The paragraph is indented by \leftskip.
%
%
\def\entry#1#2{\begingroup
\def\entry#1#2{\begingroup
  %
  %
  % Start a new paragraph if necessary, so our assignments below can't
  % Start a new paragraph if necessary, so our assignments below can't
  % affect previous text.
  % affect previous text.
  \par
  \par
  %
  %
  % Do not fill out the last line with white space.
  % Do not fill out the last line with white space.
  \parfillskip = 0in
  \parfillskip = 0in
  %
  %
  % No extra space above this paragraph.
  % No extra space above this paragraph.
  \parskip = 0in
  \parskip = 0in
  %
  %
  % Do not prefer a separate line ending with a hyphen to fewer lines.
  % Do not prefer a separate line ending with a hyphen to fewer lines.
  \finalhyphendemerits = 0
  \finalhyphendemerits = 0
  %
  %
  % \hangindent is only relevant when the entry text and page number
  % \hangindent is only relevant when the entry text and page number
  % don't both fit on one line.  In that case, bob suggests starting the
  % don't both fit on one line.  In that case, bob suggests starting the
  % dots pretty far over on the line.  Unfortunately, a large
  % dots pretty far over on the line.  Unfortunately, a large
  % indentation looks wrong when the entry text itself is broken across
  % indentation looks wrong when the entry text itself is broken across
  % lines.  So we use a small indentation and put up with long leaders.
  % lines.  So we use a small indentation and put up with long leaders.
  %
  %
  % \hangafter is reset to 1 (which is the value we want) at the start
  % \hangafter is reset to 1 (which is the value we want) at the start
  % of each paragraph, so we need not do anything with that.
  % of each paragraph, so we need not do anything with that.
  \hangindent = 2em
  \hangindent = 2em
  %
  %
  % When the entry text needs to be broken, just fill out the first line
  % When the entry text needs to be broken, just fill out the first line
  % with blank space.
  % with blank space.
  \rightskip = 0pt plus1fil
  \rightskip = 0pt plus1fil
  %
  %
  % A bit of stretch before each entry for the benefit of balancing columns.
  % A bit of stretch before each entry for the benefit of balancing columns.
  \vskip 0pt plus1pt
  \vskip 0pt plus1pt
  %
  %
  % Start a ``paragraph'' for the index entry so the line breaking
  % Start a ``paragraph'' for the index entry so the line breaking
  % parameters we've set above will have an effect.
  % parameters we've set above will have an effect.
  \noindent
  \noindent
  %
  %
  % Insert the text of the index entry.  TeX will do line-breaking on it.
  % Insert the text of the index entry.  TeX will do line-breaking on it.
  #1%
  #1%
  % The following is kludged to not output a line of dots in the index if
  % The following is kludged to not output a line of dots in the index if
  % there are no page numbers.  The next person who breaks this will be
  % there are no page numbers.  The next person who breaks this will be
  % cursed by a Unix daemon.
  % cursed by a Unix daemon.
  \def\tempa{{\rm }}%
  \def\tempa{{\rm }}%
  \def\tempb{#2}%
  \def\tempb{#2}%
  \edef\tempc{\tempa}%
  \edef\tempc{\tempa}%
  \edef\tempd{\tempb}%
  \edef\tempd{\tempb}%
  \ifx\tempc\tempd\ \else%
  \ifx\tempc\tempd\ \else%
    %
    %
    % If we must, put the page number on a line of its own, and fill out
    % If we must, put the page number on a line of its own, and fill out
    % this line with blank space.  (The \hfil is overwhelmed with the
    % this line with blank space.  (The \hfil is overwhelmed with the
    % fill leaders glue in \indexdotfill if the page number does fit.)
    % fill leaders glue in \indexdotfill if the page number does fit.)
    \hfil\penalty50
    \hfil\penalty50
    \null\nobreak\indexdotfill % Have leaders before the page number.
    \null\nobreak\indexdotfill % Have leaders before the page number.
    %
    %
    % The `\ ' here is removed by the implicit \unskip that TeX does as
    % The `\ ' here is removed by the implicit \unskip that TeX does as
    % part of (the primitive) \par.  Without it, a spurious underfull
    % part of (the primitive) \par.  Without it, a spurious underfull
    % \hbox ensues.
    % \hbox ensues.
    \ #2% The page number ends the paragraph.
    \ #2% The page number ends the paragraph.
  \fi%
  \fi%
  \par
  \par
\endgroup}
\endgroup}
 
 
% Like \dotfill except takes at least 1 em.
% Like \dotfill except takes at least 1 em.
\def\indexdotfill{\cleaders
\def\indexdotfill{\cleaders
  \hbox{$\mathsurround=0pt \mkern1.5mu ${\it .}$ \mkern1.5mu$}\hskip 1em plus 1fill}
  \hbox{$\mathsurround=0pt \mkern1.5mu ${\it .}$ \mkern1.5mu$}\hskip 1em plus 1fill}
 
 
\def\primary #1{\line{#1\hfil}}
\def\primary #1{\line{#1\hfil}}
 
 
\newskip\secondaryindent \secondaryindent=0.5cm
\newskip\secondaryindent \secondaryindent=0.5cm
 
 
\def\secondary #1#2{
\def\secondary #1#2{
{\parfillskip=0in \parskip=0in
{\parfillskip=0in \parskip=0in
\hangindent =1in \hangafter=1
\hangindent =1in \hangafter=1
\noindent\hskip\secondaryindent\hbox{#1}\indexdotfill #2\par
\noindent\hskip\secondaryindent\hbox{#1}\indexdotfill #2\par
}}
}}
 
 
% Define two-column mode, which we use to typeset indexes.
% Define two-column mode, which we use to typeset indexes.
% Adapted from the TeXbook, page 416, which is to say,
% Adapted from the TeXbook, page 416, which is to say,
% the manmac.tex format used to print the TeXbook itself.
% the manmac.tex format used to print the TeXbook itself.
\catcode`\@=11
\catcode`\@=11
 
 
\newbox\partialpage
\newbox\partialpage
\newdimen\doublecolumnhsize
\newdimen\doublecolumnhsize
 
 
\def\begindoublecolumns{\begingroup % ended by \enddoublecolumns
\def\begindoublecolumns{\begingroup % ended by \enddoublecolumns
  % Grab any single-column material above us.
  % Grab any single-column material above us.
  \output = {\global\setbox\partialpage = \vbox{%
  \output = {\global\setbox\partialpage = \vbox{%
    %
    %
    % Here is a possibility not foreseen in manmac: if we accumulate a
    % Here is a possibility not foreseen in manmac: if we accumulate a
    % whole lot of material, we might end up calling this \output
    % whole lot of material, we might end up calling this \output
    % routine twice in a row (see the doublecol-lose test, which is
    % routine twice in a row (see the doublecol-lose test, which is
    % essentially a couple of indexes with @setchapternewpage off).  In
    % essentially a couple of indexes with @setchapternewpage off).  In
    % that case, we must prevent the second \partialpage from
    % that case, we must prevent the second \partialpage from
    % simply overwriting the first, causing us to lose the page.
    % simply overwriting the first, causing us to lose the page.
    % This will preserve it until a real output routine can ship it
    % This will preserve it until a real output routine can ship it
    % out.  Generally, \partialpage will be empty when this runs and
    % out.  Generally, \partialpage will be empty when this runs and
    % this will be a no-op.
    % this will be a no-op.
    \unvbox\partialpage
    \unvbox\partialpage
    %
    %
    % Unvbox the main output page.
    % Unvbox the main output page.
    \unvbox255
    \unvbox255
    \kern-\topskip \kern\baselineskip
    \kern-\topskip \kern\baselineskip
  }}%
  }}%
  \eject
  \eject
  %
  %
  % Use the double-column output routine for subsequent pages.
  % Use the double-column output routine for subsequent pages.
  \output = {\doublecolumnout}%
  \output = {\doublecolumnout}%
  %
  %
  % Change the page size parameters.  We could do this once outside this
  % Change the page size parameters.  We could do this once outside this
  % routine, in each of @smallbook, @afourpaper, and the default 8.5x11
  % routine, in each of @smallbook, @afourpaper, and the default 8.5x11
  % format, but then we repeat the same computation.  Repeating a couple
  % format, but then we repeat the same computation.  Repeating a couple
  % of assignments once per index is clearly meaningless for the
  % of assignments once per index is clearly meaningless for the
  % execution time, so we may as well do it in one place.
  % execution time, so we may as well do it in one place.
  %
  %
  % First we halve the line length, less a little for the gutter between
  % First we halve the line length, less a little for the gutter between
  % the columns.  We compute the gutter based on the line length, so it
  % the columns.  We compute the gutter based on the line length, so it
  % changes automatically with the paper format.  The magic constant
  % changes automatically with the paper format.  The magic constant
  % below is chosen so that the gutter has the same value (well, +-<1pt)
  % below is chosen so that the gutter has the same value (well, +-<1pt)
  % as it did when we hard-coded it.
  % as it did when we hard-coded it.
  %
  %
  % We put the result in a separate register, \doublecolumhsize, so we
  % We put the result in a separate register, \doublecolumhsize, so we
  % can restore it in \pagesofar, after \hsize itself has (potentially)
  % can restore it in \pagesofar, after \hsize itself has (potentially)
  % been clobbered.
  % been clobbered.
  %
  %
  \doublecolumnhsize = \hsize
  \doublecolumnhsize = \hsize
    \advance\doublecolumnhsize by -.04154\hsize
    \advance\doublecolumnhsize by -.04154\hsize
    \divide\doublecolumnhsize by 2
    \divide\doublecolumnhsize by 2
  \hsize = \doublecolumnhsize
  \hsize = \doublecolumnhsize
  %
  %
  % Double the \vsize as well.  (We don't need a separate register here,
  % Double the \vsize as well.  (We don't need a separate register here,
  % since nobody clobbers \vsize.)
  % since nobody clobbers \vsize.)
  \advance\vsize by -\ht\partialpage
  \advance\vsize by -\ht\partialpage
  \vsize = 2\vsize
  \vsize = 2\vsize
}
}
 
 
% The double-column output routine for all double-column pages except
% The double-column output routine for all double-column pages except
% the last.
% the last.
%
%
\def\doublecolumnout{%
\def\doublecolumnout{%
  \splittopskip=\topskip \splitmaxdepth=\maxdepth
  \splittopskip=\topskip \splitmaxdepth=\maxdepth
  % Get the available space for the double columns -- the normal
  % Get the available space for the double columns -- the normal
  % (undoubled) page height minus any material left over from the
  % (undoubled) page height minus any material left over from the
  % previous page.
  % previous page.
  \dimen@ = \vsize
  \dimen@ = \vsize
  \divide\dimen@ by 2
  \divide\dimen@ by 2
  %
  %
  % box0 will be the left-hand column, box2 the right.
  % box0 will be the left-hand column, box2 the right.
  \setbox0=\vsplit255 to\dimen@ \setbox2=\vsplit255 to\dimen@
  \setbox0=\vsplit255 to\dimen@ \setbox2=\vsplit255 to\dimen@
  \onepageout\pagesofar
  \onepageout\pagesofar
  \unvbox255
  \unvbox255
  \penalty\outputpenalty
  \penalty\outputpenalty
}
}
\def\pagesofar{%
\def\pagesofar{%
  % Re-output the contents of the output page -- any previous material,
  % Re-output the contents of the output page -- any previous material,
  % followed by the two boxes we just split, in box0 and box2.
  % followed by the two boxes we just split, in box0 and box2.
  \advance\vsize by \ht\partialpage
  \advance\vsize by \ht\partialpage
  \unvbox\partialpage
  \unvbox\partialpage
  %
  %
  \hsize = \doublecolumnhsize
  \hsize = \doublecolumnhsize
  \wd0=\hsize \wd2=\hsize
  \wd0=\hsize \wd2=\hsize
  \hbox to\pagewidth{\box0\hfil\box2}%
  \hbox to\pagewidth{\box0\hfil\box2}%
}
}
\def\enddoublecolumns{%
\def\enddoublecolumns{%
  \output = {%
  \output = {%
    % Split the last of the double-column material.  Leave on the
    % Split the last of the double-column material.  Leave on the
    % current page, no automatic page break.
    % current page, no automatic page break.
    \balancecolumns
    \balancecolumns
    %
    %
    % If we end up splitting too much material for the current page,
    % If we end up splitting too much material for the current page,
    % though, there will be another page break right after this \output
    % though, there will be another page break right after this \output
    % invocation ends.  Having called \balancecolumns once, we do not
    % invocation ends.  Having called \balancecolumns once, we do not
    % want to call it again.  Therefore, reset \output to its normal
    % want to call it again.  Therefore, reset \output to its normal
    % definition right away.  (We hope \balancecolumns will never be
    % definition right away.  (We hope \balancecolumns will never be
    % called on to balance too much material, but if it is, this makes
    % called on to balance too much material, but if it is, this makes
    % the output somewhat more palatable.)
    % the output somewhat more palatable.)
    \global\output = {\onepageout{\pagecontents\PAGE}}%
    \global\output = {\onepageout{\pagecontents\PAGE}}%
    %
    %
    % \pagegoal was set to the doubled \vsize above, since we restarted
    % \pagegoal was set to the doubled \vsize above, since we restarted
    % the current page.  We're now back to normal single-column
    % the current page.  We're now back to normal single-column
    % typesetting, so reset \pagegoal to the normal \vsize.
    % typesetting, so reset \pagegoal to the normal \vsize.
    \pagegoal = \vsize
    \pagegoal = \vsize
  }%
  }%
  \eject
  \eject
  \endgroup % started in \begindoublecolumns
  \endgroup % started in \begindoublecolumns
}
}
\def\balancecolumns{%
\def\balancecolumns{%
  % Called at the end of the double column material.
  % Called at the end of the double column material.
  \setbox0 = \vbox{\unvbox255}% like \box255 but more efficient, see p.120.
  \setbox0 = \vbox{\unvbox255}% like \box255 but more efficient, see p.120.
  \dimen@ = \ht0
  \dimen@ = \ht0
  \advance\dimen@ by \topskip
  \advance\dimen@ by \topskip
  \advance\dimen@ by-\baselineskip
  \advance\dimen@ by-\baselineskip
  \divide\dimen@ by 2 % target to split to
  \divide\dimen@ by 2 % target to split to
  %debug\message{final 2-column material height=\the\ht0, target=\the\dimen@.}%
  %debug\message{final 2-column material height=\the\ht0, target=\the\dimen@.}%
  \splittopskip = \topskip
  \splittopskip = \topskip
  % Loop until we get a decent breakpoint.
  % Loop until we get a decent breakpoint.
  {%
  {%
    \vbadness = 10000
    \vbadness = 10000
    \loop
    \loop
      \global\setbox3 = \copy0
      \global\setbox3 = \copy0
      \global\setbox1 = \vsplit3 to \dimen@
      \global\setbox1 = \vsplit3 to \dimen@
    \ifdim\ht3>\dimen@
    \ifdim\ht3>\dimen@
      \global\advance\dimen@ by 1pt
      \global\advance\dimen@ by 1pt
    \repeat
    \repeat
  }%
  }%
  %debug\message{split to \the\dimen@, column heights: \the\ht1, \the\ht3.}%
  %debug\message{split to \the\dimen@, column heights: \the\ht1, \the\ht3.}%
  \setbox0=\vbox to\dimen@{\unvbox1}%
  \setbox0=\vbox to\dimen@{\unvbox1}%
  \setbox2=\vbox to\dimen@{\unvbox3}%
  \setbox2=\vbox to\dimen@{\unvbox3}%
  %
  %
  \pagesofar
  \pagesofar
}
}
\catcode`\@ = \other
\catcode`\@ = \other
 
 
 
 
\message{sectioning,}
\message{sectioning,}
% Define chapters, sections, etc.
% Define chapters, sections, etc.
 
 
\newcount\chapno
\newcount\chapno
\newcount\secno        \secno=0
\newcount\secno        \secno=0
\newcount\subsecno     \subsecno=0
\newcount\subsecno     \subsecno=0
\newcount\subsubsecno  \subsubsecno=0
\newcount\subsubsecno  \subsubsecno=0
 
 
% This counter is funny since it counts through charcodes of letters A, B, ...
% This counter is funny since it counts through charcodes of letters A, B, ...
\newcount\appendixno  \appendixno = `\@
\newcount\appendixno  \appendixno = `\@
\def\appendixletter{\char\the\appendixno}
\def\appendixletter{\char\the\appendixno}
 
 
% Each @chapter defines this as the name of the chapter.
% Each @chapter defines this as the name of the chapter.
% page headings and footings can use it.  @section does likewise.
% page headings and footings can use it.  @section does likewise.
\def\thischapter{}
\def\thischapter{}
\def\thissection{}
\def\thissection{}
 
 
\newcount\absseclevel % used to calculate proper heading level
\newcount\absseclevel % used to calculate proper heading level
\newcount\secbase\secbase=0 % @raise/lowersections modify this count
\newcount\secbase\secbase=0 % @raise/lowersections modify this count
 
 
% @raisesections: treat @section as chapter, @subsection as section, etc.
% @raisesections: treat @section as chapter, @subsection as section, etc.
\def\raisesections{\global\advance\secbase by -1}
\def\raisesections{\global\advance\secbase by -1}
\let\up=\raisesections % original BFox name
\let\up=\raisesections % original BFox name
 
 
% @lowersections: treat @chapter as section, @section as subsection, etc.
% @lowersections: treat @chapter as section, @section as subsection, etc.
\def\lowersections{\global\advance\secbase by 1}
\def\lowersections{\global\advance\secbase by 1}
\let\down=\lowersections % original BFox name
\let\down=\lowersections % original BFox name
 
 
% Choose a numbered-heading macro
% Choose a numbered-heading macro
% #1 is heading level if unmodified by @raisesections or @lowersections
% #1 is heading level if unmodified by @raisesections or @lowersections
% #2 is text for heading
% #2 is text for heading
\def\numhead#1#2{\absseclevel=\secbase\advance\absseclevel by #1
\def\numhead#1#2{\absseclevel=\secbase\advance\absseclevel by #1
\ifcase\absseclevel
\ifcase\absseclevel
  \chapterzzz{#2}
  \chapterzzz{#2}
\or
\or
  \seczzz{#2}
  \seczzz{#2}
\or
\or
  \numberedsubseczzz{#2}
  \numberedsubseczzz{#2}
\or
\or
  \numberedsubsubseczzz{#2}
  \numberedsubsubseczzz{#2}
\else
\else
  \ifnum \absseclevel<0
  \ifnum \absseclevel<0
    \chapterzzz{#2}
    \chapterzzz{#2}
  \else
  \else
    \numberedsubsubseczzz{#2}
    \numberedsubsubseczzz{#2}
  \fi
  \fi
\fi
\fi
}
}
 
 
% like \numhead, but chooses appendix heading levels
% like \numhead, but chooses appendix heading levels
\def\apphead#1#2{\absseclevel=\secbase\advance\absseclevel by #1
\def\apphead#1#2{\absseclevel=\secbase\advance\absseclevel by #1
\ifcase\absseclevel
\ifcase\absseclevel
  \appendixzzz{#2}
  \appendixzzz{#2}
\or
\or
  \appendixsectionzzz{#2}
  \appendixsectionzzz{#2}
\or
\or
  \appendixsubseczzz{#2}
  \appendixsubseczzz{#2}
\or
\or
  \appendixsubsubseczzz{#2}
  \appendixsubsubseczzz{#2}
\else
\else
  \ifnum \absseclevel<0
  \ifnum \absseclevel<0
    \appendixzzz{#2}
    \appendixzzz{#2}
  \else
  \else
    \appendixsubsubseczzz{#2}
    \appendixsubsubseczzz{#2}
  \fi
  \fi
\fi
\fi
}
}
 
 
% like \numhead, but chooses numberless heading levels
% like \numhead, but chooses numberless heading levels
\def\unnmhead#1#2{\absseclevel=\secbase\advance\absseclevel by #1
\def\unnmhead#1#2{\absseclevel=\secbase\advance\absseclevel by #1
\ifcase\absseclevel
\ifcase\absseclevel
  \unnumberedzzz{#2}
  \unnumberedzzz{#2}
\or
\or
  \unnumberedseczzz{#2}
  \unnumberedseczzz{#2}
\or
\or
  \unnumberedsubseczzz{#2}
  \unnumberedsubseczzz{#2}
\or
\or
  \unnumberedsubsubseczzz{#2}
  \unnumberedsubsubseczzz{#2}
\else
\else
  \ifnum \absseclevel<0
  \ifnum \absseclevel<0
    \unnumberedzzz{#2}
    \unnumberedzzz{#2}
  \else
  \else
    \unnumberedsubsubseczzz{#2}
    \unnumberedsubsubseczzz{#2}
  \fi
  \fi
\fi
\fi
}
}
 
 
% @chapter, @appendix, @unnumbered.
% @chapter, @appendix, @unnumbered.
\def\thischaptername{No Chapter Title}
\def\thischaptername{No Chapter Title}
\outer\def\chapter{\parsearg\chapteryyy}
\outer\def\chapter{\parsearg\chapteryyy}
\def\chapteryyy #1{\numhead0{#1}} % normally numhead0 calls chapterzzz
\def\chapteryyy #1{\numhead0{#1}} % normally numhead0 calls chapterzzz
\def\chapterzzz #1{%
\def\chapterzzz #1{%
\secno=0 \subsecno=0 \subsubsecno=0
\secno=0 \subsecno=0 \subsubsecno=0
\global\advance \chapno by 1 \message{\putwordChapter\space \the\chapno}%
\global\advance \chapno by 1 \message{\putwordChapter\space \the\chapno}%
\chapmacro {#1}{\the\chapno}%
\chapmacro {#1}{\the\chapno}%
\gdef\thissection{#1}%
\gdef\thissection{#1}%
\gdef\thischaptername{#1}%
\gdef\thischaptername{#1}%
% We don't substitute the actual chapter name into \thischapter
% We don't substitute the actual chapter name into \thischapter
% because we don't want its macros evaluated now.
% because we don't want its macros evaluated now.
\xdef\thischapter{\putwordChapter{} \the\chapno: \noexpand\thischaptername}%
\xdef\thischapter{\putwordChapter{} \the\chapno: \noexpand\thischaptername}%
\toks0 = {#1}%
\toks0 = {#1}%
\edef\temp{\noexpand\writetocentry{\realbackslash chapentry{\the\toks0}%
\edef\temp{\noexpand\writetocentry{\realbackslash chapentry{\the\toks0}%
                                  {\the\chapno}}}%
                                  {\the\chapno}}}%
\temp
\temp
\donoderef
\donoderef
\global\let\section = \numberedsec
\global\let\section = \numberedsec
\global\let\subsection = \numberedsubsec
\global\let\subsection = \numberedsubsec
\global\let\subsubsection = \numberedsubsubsec
\global\let\subsubsection = \numberedsubsubsec
}
}
 
 
\outer\def\appendix{\parsearg\appendixyyy}
\outer\def\appendix{\parsearg\appendixyyy}
\def\appendixyyy #1{\apphead0{#1}} % normally apphead0 calls appendixzzz
\def\appendixyyy #1{\apphead0{#1}} % normally apphead0 calls appendixzzz
\def\appendixzzz #1{%
\def\appendixzzz #1{%
\secno=0 \subsecno=0 \subsubsecno=0
\secno=0 \subsecno=0 \subsubsecno=0
\global\advance \appendixno by 1
\global\advance \appendixno by 1
\message{\putwordAppendix\space \appendixletter}%
\message{\putwordAppendix\space \appendixletter}%
\chapmacro {#1}{\putwordAppendix{} \appendixletter}%
\chapmacro {#1}{\putwordAppendix{} \appendixletter}%
\gdef\thissection{#1}%
\gdef\thissection{#1}%
\gdef\thischaptername{#1}%
\gdef\thischaptername{#1}%
\xdef\thischapter{\putwordAppendix{} \appendixletter: \noexpand\thischaptername}%
\xdef\thischapter{\putwordAppendix{} \appendixletter: \noexpand\thischaptername}%
\toks0 = {#1}%
\toks0 = {#1}%
\edef\temp{\noexpand\writetocentry{\realbackslash chapentry{\the\toks0}%
\edef\temp{\noexpand\writetocentry{\realbackslash chapentry{\the\toks0}%
                       {\putwordAppendix{} \appendixletter}}}%
                       {\putwordAppendix{} \appendixletter}}}%
\temp
\temp
\appendixnoderef
\appendixnoderef
\global\let\section = \appendixsec
\global\let\section = \appendixsec
\global\let\subsection = \appendixsubsec
\global\let\subsection = \appendixsubsec
\global\let\subsubsection = \appendixsubsubsec
\global\let\subsubsection = \appendixsubsubsec
}
}
 
 
% @centerchap is like @unnumbered, but the heading is centered.
% @centerchap is like @unnumbered, but the heading is centered.
\outer\def\centerchap{\parsearg\centerchapyyy}
\outer\def\centerchap{\parsearg\centerchapyyy}
\def\centerchapyyy #1{{\let\unnumbchapmacro=\centerchapmacro \unnumberedyyy{#1}}}
\def\centerchapyyy #1{{\let\unnumbchapmacro=\centerchapmacro \unnumberedyyy{#1}}}
 
 
% @top is like @unnumbered.
% @top is like @unnumbered.
\outer\def\top{\parsearg\unnumberedyyy}
\outer\def\top{\parsearg\unnumberedyyy}
 
 
\outer\def\unnumbered{\parsearg\unnumberedyyy}
\outer\def\unnumbered{\parsearg\unnumberedyyy}
\def\unnumberedyyy #1{\unnmhead0{#1}} % normally unnmhead0 calls unnumberedzzz
\def\unnumberedyyy #1{\unnmhead0{#1}} % normally unnmhead0 calls unnumberedzzz
\def\unnumberedzzz #1{%
\def\unnumberedzzz #1{%
\secno=0 \subsecno=0 \subsubsecno=0
\secno=0 \subsecno=0 \subsubsecno=0
%
%
% This used to be simply \message{#1}, but TeX fully expands the
% This used to be simply \message{#1}, but TeX fully expands the
% argument to \message.  Therefore, if #1 contained @-commands, TeX
% argument to \message.  Therefore, if #1 contained @-commands, TeX
% expanded them.  For example, in `@unnumbered The @cite{Book}', TeX
% expanded them.  For example, in `@unnumbered The @cite{Book}', TeX
% expanded @cite (which turns out to cause errors because \cite is meant
% expanded @cite (which turns out to cause errors because \cite is meant
% to be executed, not expanded).
% to be executed, not expanded).
%
%
% Anyway, we don't want the fully-expanded definition of @cite to appear
% Anyway, we don't want the fully-expanded definition of @cite to appear
% as a result of the \message, we just want `@cite' itself.  We use
% as a result of the \message, we just want `@cite' itself.  We use
% \the<toks register> to achieve this: TeX expands \the<toks> only once,
% \the<toks register> to achieve this: TeX expands \the<toks> only once,
% simply yielding the contents of <toks register>.  (We also do this for
% simply yielding the contents of <toks register>.  (We also do this for
% the toc entries.)
% the toc entries.)
\toks0 = {#1}\message{(\the\toks0)}%
\toks0 = {#1}\message{(\the\toks0)}%
%
%
\unnumbchapmacro {#1}%
\unnumbchapmacro {#1}%
\gdef\thischapter{#1}\gdef\thissection{#1}%
\gdef\thischapter{#1}\gdef\thissection{#1}%
\toks0 = {#1}%
\toks0 = {#1}%
\edef\temp{\noexpand\writetocentry{\realbackslash unnumbchapentry{\the\toks0}}}%
\edef\temp{\noexpand\writetocentry{\realbackslash unnumbchapentry{\the\toks0}}}%
\temp
\temp
\unnumbnoderef
\unnumbnoderef
\global\let\section = \unnumberedsec
\global\let\section = \unnumberedsec
\global\let\subsection = \unnumberedsubsec
\global\let\subsection = \unnumberedsubsec
\global\let\subsubsection = \unnumberedsubsubsec
\global\let\subsubsection = \unnumberedsubsubsec
}
}
 
 
% Sections.
% Sections.
\outer\def\numberedsec{\parsearg\secyyy}
\outer\def\numberedsec{\parsearg\secyyy}
\def\secyyy #1{\numhead1{#1}} % normally calls seczzz
\def\secyyy #1{\numhead1{#1}} % normally calls seczzz
\def\seczzz #1{%
\def\seczzz #1{%
\subsecno=0 \subsubsecno=0 \global\advance \secno by 1 %
\subsecno=0 \subsubsecno=0 \global\advance \secno by 1 %
\gdef\thissection{#1}\secheading {#1}{\the\chapno}{\the\secno}%
\gdef\thissection{#1}\secheading {#1}{\the\chapno}{\the\secno}%
\toks0 = {#1}%
\toks0 = {#1}%
\edef\temp{\noexpand\writetocentry{\realbackslash secentry{\the\toks0}%
\edef\temp{\noexpand\writetocentry{\realbackslash secentry{\the\toks0}%
                                  {\the\chapno}{\the\secno}}}%
                                  {\the\chapno}{\the\secno}}}%
\temp
\temp
\donoderef
\donoderef
\nobreak
\nobreak
}
}
 
 
\outer\def\appendixsection{\parsearg\appendixsecyyy}
\outer\def\appendixsection{\parsearg\appendixsecyyy}
\outer\def\appendixsec{\parsearg\appendixsecyyy}
\outer\def\appendixsec{\parsearg\appendixsecyyy}
\def\appendixsecyyy #1{\apphead1{#1}} % normally calls appendixsectionzzz
\def\appendixsecyyy #1{\apphead1{#1}} % normally calls appendixsectionzzz
\def\appendixsectionzzz #1{%
\def\appendixsectionzzz #1{%
\subsecno=0 \subsubsecno=0 \global\advance \secno by 1 %
\subsecno=0 \subsubsecno=0 \global\advance \secno by 1 %
\gdef\thissection{#1}\secheading {#1}{\appendixletter}{\the\secno}%
\gdef\thissection{#1}\secheading {#1}{\appendixletter}{\the\secno}%
\toks0 = {#1}%
\toks0 = {#1}%
\edef\temp{\noexpand\writetocentry{\realbackslash secentry{\the\toks0}%
\edef\temp{\noexpand\writetocentry{\realbackslash secentry{\the\toks0}%
                                  {\appendixletter}{\the\secno}}}%
                                  {\appendixletter}{\the\secno}}}%
\temp
\temp
\appendixnoderef
\appendixnoderef
\nobreak
\nobreak
}
}
 
 
\outer\def\unnumberedsec{\parsearg\unnumberedsecyyy}
\outer\def\unnumberedsec{\parsearg\unnumberedsecyyy}
\def\unnumberedsecyyy #1{\unnmhead1{#1}} % normally calls unnumberedseczzz
\def\unnumberedsecyyy #1{\unnmhead1{#1}} % normally calls unnumberedseczzz
\def\unnumberedseczzz #1{%
\def\unnumberedseczzz #1{%
\plainsecheading {#1}\gdef\thissection{#1}%
\plainsecheading {#1}\gdef\thissection{#1}%
\toks0 = {#1}%
\toks0 = {#1}%
\edef\temp{\noexpand\writetocentry{\realbackslash unnumbsecentry{\the\toks0}}}%
\edef\temp{\noexpand\writetocentry{\realbackslash unnumbsecentry{\the\toks0}}}%
\temp
\temp
\unnumbnoderef
\unnumbnoderef
\nobreak
\nobreak
}
}
 
 
% Subsections.
% Subsections.
\outer\def\numberedsubsec{\parsearg\numberedsubsecyyy}
\outer\def\numberedsubsec{\parsearg\numberedsubsecyyy}
\def\numberedsubsecyyy #1{\numhead2{#1}} % normally calls numberedsubseczzz
\def\numberedsubsecyyy #1{\numhead2{#1}} % normally calls numberedsubseczzz
\def\numberedsubseczzz #1{%
\def\numberedsubseczzz #1{%
\gdef\thissection{#1}\subsubsecno=0 \global\advance \subsecno by 1 %
\gdef\thissection{#1}\subsubsecno=0 \global\advance \subsecno by 1 %
\subsecheading {#1}{\the\chapno}{\the\secno}{\the\subsecno}%
\subsecheading {#1}{\the\chapno}{\the\secno}{\the\subsecno}%
\toks0 = {#1}%
\toks0 = {#1}%
\edef\temp{\noexpand\writetocentry{\realbackslash subsecentry{\the\toks0}%
\edef\temp{\noexpand\writetocentry{\realbackslash subsecentry{\the\toks0}%
                                    {\the\chapno}{\the\secno}{\the\subsecno}}}%
                                    {\the\chapno}{\the\secno}{\the\subsecno}}}%
\temp
\temp
\donoderef
\donoderef
\nobreak
\nobreak
}
}
 
 
\outer\def\appendixsubsec{\parsearg\appendixsubsecyyy}
\outer\def\appendixsubsec{\parsearg\appendixsubsecyyy}
\def\appendixsubsecyyy #1{\apphead2{#1}} % normally calls appendixsubseczzz
\def\appendixsubsecyyy #1{\apphead2{#1}} % normally calls appendixsubseczzz
\def\appendixsubseczzz #1{%
\def\appendixsubseczzz #1{%
\gdef\thissection{#1}\subsubsecno=0 \global\advance \subsecno by 1 %
\gdef\thissection{#1}\subsubsecno=0 \global\advance \subsecno by 1 %
\subsecheading {#1}{\appendixletter}{\the\secno}{\the\subsecno}%
\subsecheading {#1}{\appendixletter}{\the\secno}{\the\subsecno}%
\toks0 = {#1}%
\toks0 = {#1}%
\edef\temp{\noexpand\writetocentry{\realbackslash subsecentry{\the\toks0}%
\edef\temp{\noexpand\writetocentry{\realbackslash subsecentry{\the\toks0}%
                                {\appendixletter}{\the\secno}{\the\subsecno}}}%
                                {\appendixletter}{\the\secno}{\the\subsecno}}}%
\temp
\temp
\appendixnoderef
\appendixnoderef
\nobreak
\nobreak
}
}
 
 
\outer\def\unnumberedsubsec{\parsearg\unnumberedsubsecyyy}
\outer\def\unnumberedsubsec{\parsearg\unnumberedsubsecyyy}
\def\unnumberedsubsecyyy #1{\unnmhead2{#1}} %normally calls unnumberedsubseczzz
\def\unnumberedsubsecyyy #1{\unnmhead2{#1}} %normally calls unnumberedsubseczzz
\def\unnumberedsubseczzz #1{%
\def\unnumberedsubseczzz #1{%
\plainsubsecheading {#1}\gdef\thissection{#1}%
\plainsubsecheading {#1}\gdef\thissection{#1}%
\toks0 = {#1}%
\toks0 = {#1}%
\edef\temp{\noexpand\writetocentry{\realbackslash unnumbsubsecentry%
\edef\temp{\noexpand\writetocentry{\realbackslash unnumbsubsecentry%
                                    {\the\toks0}}}%
                                    {\the\toks0}}}%
\temp
\temp
\unnumbnoderef
\unnumbnoderef
\nobreak
\nobreak
}
}
 
 
% Subsubsections.
% Subsubsections.
\outer\def\numberedsubsubsec{\parsearg\numberedsubsubsecyyy}
\outer\def\numberedsubsubsec{\parsearg\numberedsubsubsecyyy}
\def\numberedsubsubsecyyy #1{\numhead3{#1}} % normally numberedsubsubseczzz
\def\numberedsubsubsecyyy #1{\numhead3{#1}} % normally numberedsubsubseczzz
\def\numberedsubsubseczzz #1{%
\def\numberedsubsubseczzz #1{%
\gdef\thissection{#1}\global\advance \subsubsecno by 1 %
\gdef\thissection{#1}\global\advance \subsubsecno by 1 %
\subsubsecheading {#1}
\subsubsecheading {#1}
  {\the\chapno}{\the\secno}{\the\subsecno}{\the\subsubsecno}%
  {\the\chapno}{\the\secno}{\the\subsecno}{\the\subsubsecno}%
\toks0 = {#1}%
\toks0 = {#1}%
\edef\temp{\noexpand\writetocentry{\realbackslash subsubsecentry{\the\toks0}%
\edef\temp{\noexpand\writetocentry{\realbackslash subsubsecentry{\the\toks0}%
  {\the\chapno}{\the\secno}{\the\subsecno}{\the\subsubsecno}}}%
  {\the\chapno}{\the\secno}{\the\subsecno}{\the\subsubsecno}}}%
\temp
\temp
\donoderef
\donoderef
\nobreak
\nobreak
}
}
 
 
\outer\def\appendixsubsubsec{\parsearg\appendixsubsubsecyyy}
\outer\def\appendixsubsubsec{\parsearg\appendixsubsubsecyyy}
\def\appendixsubsubsecyyy #1{\apphead3{#1}} % normally appendixsubsubseczzz
\def\appendixsubsubsecyyy #1{\apphead3{#1}} % normally appendixsubsubseczzz
\def\appendixsubsubseczzz #1{%
\def\appendixsubsubseczzz #1{%
\gdef\thissection{#1}\global\advance \subsubsecno by 1 %
\gdef\thissection{#1}\global\advance \subsubsecno by 1 %
\subsubsecheading {#1}
\subsubsecheading {#1}
  {\appendixletter}{\the\secno}{\the\subsecno}{\the\subsubsecno}%
  {\appendixletter}{\the\secno}{\the\subsecno}{\the\subsubsecno}%
\toks0 = {#1}%
\toks0 = {#1}%
\edef\temp{\noexpand\writetocentry{\realbackslash subsubsecentry{\the\toks0}%
\edef\temp{\noexpand\writetocentry{\realbackslash subsubsecentry{\the\toks0}%
  {\appendixletter}{\the\secno}{\the\subsecno}{\the\subsubsecno}}}%
  {\appendixletter}{\the\secno}{\the\subsecno}{\the\subsubsecno}}}%
\temp
\temp
\appendixnoderef
\appendixnoderef
\nobreak
\nobreak
}
}
 
 
\outer\def\unnumberedsubsubsec{\parsearg\unnumberedsubsubsecyyy}
\outer\def\unnumberedsubsubsec{\parsearg\unnumberedsubsubsecyyy}
\def\unnumberedsubsubsecyyy #1{\unnmhead3{#1}} %normally unnumberedsubsubseczzz
\def\unnumberedsubsubsecyyy #1{\unnmhead3{#1}} %normally unnumberedsubsubseczzz
\def\unnumberedsubsubseczzz #1{%
\def\unnumberedsubsubseczzz #1{%
\plainsubsubsecheading {#1}\gdef\thissection{#1}%
\plainsubsubsecheading {#1}\gdef\thissection{#1}%
\toks0 = {#1}%
\toks0 = {#1}%
\edef\temp{\noexpand\writetocentry{\realbackslash unnumbsubsubsecentry%
\edef\temp{\noexpand\writetocentry{\realbackslash unnumbsubsubsecentry%
                                    {\the\toks0}}}%
                                    {\the\toks0}}}%
\temp
\temp
\unnumbnoderef
\unnumbnoderef
\nobreak
\nobreak
}
}
 
 
% These are variants which are not "outer", so they can appear in @ifinfo.
% These are variants which are not "outer", so they can appear in @ifinfo.
% Actually, they should now be obsolete; ordinary section commands should work.
% Actually, they should now be obsolete; ordinary section commands should work.
\def\infotop{\parsearg\unnumberedzzz}
\def\infotop{\parsearg\unnumberedzzz}
\def\infounnumbered{\parsearg\unnumberedzzz}
\def\infounnumbered{\parsearg\unnumberedzzz}
\def\infounnumberedsec{\parsearg\unnumberedseczzz}
\def\infounnumberedsec{\parsearg\unnumberedseczzz}
\def\infounnumberedsubsec{\parsearg\unnumberedsubseczzz}
\def\infounnumberedsubsec{\parsearg\unnumberedsubseczzz}
\def\infounnumberedsubsubsec{\parsearg\unnumberedsubsubseczzz}
\def\infounnumberedsubsubsec{\parsearg\unnumberedsubsubseczzz}
 
 
\def\infoappendix{\parsearg\appendixzzz}
\def\infoappendix{\parsearg\appendixzzz}
\def\infoappendixsec{\parsearg\appendixseczzz}
\def\infoappendixsec{\parsearg\appendixseczzz}
\def\infoappendixsubsec{\parsearg\appendixsubseczzz}
\def\infoappendixsubsec{\parsearg\appendixsubseczzz}
\def\infoappendixsubsubsec{\parsearg\appendixsubsubseczzz}
\def\infoappendixsubsubsec{\parsearg\appendixsubsubseczzz}
 
 
\def\infochapter{\parsearg\chapterzzz}
\def\infochapter{\parsearg\chapterzzz}
\def\infosection{\parsearg\sectionzzz}
\def\infosection{\parsearg\sectionzzz}
\def\infosubsection{\parsearg\subsectionzzz}
\def\infosubsection{\parsearg\subsectionzzz}
\def\infosubsubsection{\parsearg\subsubsectionzzz}
\def\infosubsubsection{\parsearg\subsubsectionzzz}
 
 
% These macros control what the section commands do, according
% These macros control what the section commands do, according
% to what kind of chapter we are in (ordinary, appendix, or unnumbered).
% to what kind of chapter we are in (ordinary, appendix, or unnumbered).
% Define them by default for a numbered chapter.
% Define them by default for a numbered chapter.
\global\let\section = \numberedsec
\global\let\section = \numberedsec
\global\let\subsection = \numberedsubsec
\global\let\subsection = \numberedsubsec
\global\let\subsubsection = \numberedsubsubsec
\global\let\subsubsection = \numberedsubsubsec
 
 
% Define @majorheading, @heading and @subheading
% Define @majorheading, @heading and @subheading
 
 
% NOTE on use of \vbox for chapter headings, section headings, and such:
% NOTE on use of \vbox for chapter headings, section headings, and such:
%       1) We use \vbox rather than the earlier \line to permit
%       1) We use \vbox rather than the earlier \line to permit
%          overlong headings to fold.
%          overlong headings to fold.
%       2) \hyphenpenalty is set to 10000 because hyphenation in a
%       2) \hyphenpenalty is set to 10000 because hyphenation in a
%          heading is obnoxious; this forbids it.
%          heading is obnoxious; this forbids it.
%       3) Likewise, headings look best if no \parindent is used, and
%       3) Likewise, headings look best if no \parindent is used, and
%          if justification is not attempted.  Hence \raggedright.
%          if justification is not attempted.  Hence \raggedright.
 
 
 
 
\def\majorheading{\parsearg\majorheadingzzz}
\def\majorheading{\parsearg\majorheadingzzz}
\def\majorheadingzzz #1{%
\def\majorheadingzzz #1{%
{\advance\chapheadingskip by 10pt \chapbreak }%
{\advance\chapheadingskip by 10pt \chapbreak }%
{\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
{\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
                  \parindent=0pt\raggedright
                  \parindent=0pt\raggedright
                  \rm #1\hfill}}\bigskip \par\penalty 200}
                  \rm #1\hfill}}\bigskip \par\penalty 200}
 
 
\def\chapheading{\parsearg\chapheadingzzz}
\def\chapheading{\parsearg\chapheadingzzz}
\def\chapheadingzzz #1{\chapbreak %
\def\chapheadingzzz #1{\chapbreak %
{\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
{\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
                  \parindent=0pt\raggedright
                  \parindent=0pt\raggedright
                  \rm #1\hfill}}\bigskip \par\penalty 200}
                  \rm #1\hfill}}\bigskip \par\penalty 200}
 
 
% @heading, @subheading, @subsubheading.
% @heading, @subheading, @subsubheading.
\def\heading{\parsearg\plainsecheading}
\def\heading{\parsearg\plainsecheading}
\def\subheading{\parsearg\plainsubsecheading}
\def\subheading{\parsearg\plainsubsecheading}
\def\subsubheading{\parsearg\plainsubsubsecheading}
\def\subsubheading{\parsearg\plainsubsubsecheading}
 
 
% These macros generate a chapter, section, etc. heading only
% These macros generate a chapter, section, etc. heading only
% (including whitespace, linebreaking, etc. around it),
% (including whitespace, linebreaking, etc. around it),
% given all the information in convenient, parsed form.
% given all the information in convenient, parsed form.
 
 
%%% Args are the skip and penalty (usually negative)
%%% Args are the skip and penalty (usually negative)
\def\dobreak#1#2{\par\ifdim\lastskip<#1\removelastskip\penalty#2\vskip#1\fi}
\def\dobreak#1#2{\par\ifdim\lastskip<#1\removelastskip\penalty#2\vskip#1\fi}
 
 
\def\setchapterstyle #1 {\csname CHAPF#1\endcsname}
\def\setchapterstyle #1 {\csname CHAPF#1\endcsname}
 
 
%%% Define plain chapter starts, and page on/off switching for it
%%% Define plain chapter starts, and page on/off switching for it
% Parameter controlling skip before chapter headings (if needed)
% Parameter controlling skip before chapter headings (if needed)
 
 
\newskip\chapheadingskip
\newskip\chapheadingskip
 
 
\def\chapbreak{\dobreak \chapheadingskip {-4000}}
\def\chapbreak{\dobreak \chapheadingskip {-4000}}
\def\chappager{\par\vfill\supereject}
\def\chappager{\par\vfill\supereject}
\def\chapoddpage{\chappager \ifodd\pageno \else \hbox to 0pt{} \chappager\fi}
\def\chapoddpage{\chappager \ifodd\pageno \else \hbox to 0pt{} \chappager\fi}
 
 
\def\setchapternewpage #1 {\csname CHAPPAG#1\endcsname}
\def\setchapternewpage #1 {\csname CHAPPAG#1\endcsname}
 
 
\def\CHAPPAGoff{%
\def\CHAPPAGoff{%
\global\let\contentsalignmacro = \chappager
\global\let\contentsalignmacro = \chappager
\global\let\pchapsepmacro=\chapbreak
\global\let\pchapsepmacro=\chapbreak
\global\let\pagealignmacro=\chappager}
\global\let\pagealignmacro=\chappager}
 
 
\def\CHAPPAGon{%
\def\CHAPPAGon{%
\global\let\contentsalignmacro = \chappager
\global\let\contentsalignmacro = \chappager
\global\let\pchapsepmacro=\chappager
\global\let\pchapsepmacro=\chappager
\global\let\pagealignmacro=\chappager
\global\let\pagealignmacro=\chappager
\global\def\HEADINGSon{\HEADINGSsingle}}
\global\def\HEADINGSon{\HEADINGSsingle}}
 
 
\def\CHAPPAGodd{
\def\CHAPPAGodd{
\global\let\contentsalignmacro = \chapoddpage
\global\let\contentsalignmacro = \chapoddpage
\global\let\pchapsepmacro=\chapoddpage
\global\let\pchapsepmacro=\chapoddpage
\global\let\pagealignmacro=\chapoddpage
\global\let\pagealignmacro=\chapoddpage
\global\def\HEADINGSon{\HEADINGSdouble}}
\global\def\HEADINGSon{\HEADINGSdouble}}
 
 
\CHAPPAGon
\CHAPPAGon
 
 
\def\CHAPFplain{
\def\CHAPFplain{
\global\let\chapmacro=\chfplain
\global\let\chapmacro=\chfplain
\global\let\unnumbchapmacro=\unnchfplain
\global\let\unnumbchapmacro=\unnchfplain
\global\let\centerchapmacro=\centerchfplain}
\global\let\centerchapmacro=\centerchfplain}
 
 
% Plain chapter opening.
% Plain chapter opening.
% #1 is the text, #2 the chapter number or empty if unnumbered.
% #1 is the text, #2 the chapter number or empty if unnumbered.
\def\chfplain#1#2{%
\def\chfplain#1#2{%
  \pchapsepmacro
  \pchapsepmacro
  {%
  {%
    \chapfonts \rm
    \chapfonts \rm
    \def\chapnum{#2}%
    \def\chapnum{#2}%
    \setbox0 = \hbox{#2\ifx\chapnum\empty\else\enspace\fi}%
    \setbox0 = \hbox{#2\ifx\chapnum\empty\else\enspace\fi}%
    \vbox{\hyphenpenalty=10000 \tolerance=5000 \parindent=0pt \raggedright
    \vbox{\hyphenpenalty=10000 \tolerance=5000 \parindent=0pt \raggedright
          \hangindent = \wd0 \centerparametersmaybe
          \hangindent = \wd0 \centerparametersmaybe
          \unhbox0 #1\par}%
          \unhbox0 #1\par}%
  }%
  }%
  \nobreak\bigskip % no page break after a chapter title
  \nobreak\bigskip % no page break after a chapter title
  \nobreak
  \nobreak
}
}
 
 
% Plain opening for unnumbered.
% Plain opening for unnumbered.
\def\unnchfplain#1{\chfplain{#1}{}}
\def\unnchfplain#1{\chfplain{#1}{}}
 
 
% @centerchap -- centered and unnumbered.
% @centerchap -- centered and unnumbered.
\let\centerparametersmaybe = \relax
\let\centerparametersmaybe = \relax
\def\centerchfplain#1{{%
\def\centerchfplain#1{{%
  \def\centerparametersmaybe{%
  \def\centerparametersmaybe{%
    \advance\rightskip by 3\rightskip
    \advance\rightskip by 3\rightskip
    \leftskip = \rightskip
    \leftskip = \rightskip
    \parfillskip = 0pt
    \parfillskip = 0pt
  }%
  }%
  \chfplain{#1}{}%
  \chfplain{#1}{}%
}}
}}
 
 
\CHAPFplain % The default
\CHAPFplain % The default
 
 
\def\unnchfopen #1{%
\def\unnchfopen #1{%
\chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
\chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
                       \parindent=0pt\raggedright
                       \parindent=0pt\raggedright
                       \rm #1\hfill}}\bigskip \par\nobreak
                       \rm #1\hfill}}\bigskip \par\nobreak
}
}
 
 
\def\chfopen #1#2{\chapoddpage {\chapfonts
\def\chfopen #1#2{\chapoddpage {\chapfonts
\vbox to 3in{\vfil \hbox to\hsize{\hfil #2} \hbox to\hsize{\hfil #1} \vfil}}%
\vbox to 3in{\vfil \hbox to\hsize{\hfil #2} \hbox to\hsize{\hfil #1} \vfil}}%
\par\penalty 5000 %
\par\penalty 5000 %
}
}
 
 
\def\centerchfopen #1{%
\def\centerchfopen #1{%
\chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
\chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
                       \parindent=0pt
                       \parindent=0pt
                       \hfill {\rm #1}\hfill}}\bigskip \par\nobreak
                       \hfill {\rm #1}\hfill}}\bigskip \par\nobreak
}
}
 
 
\def\CHAPFopen{
\def\CHAPFopen{
\global\let\chapmacro=\chfopen
\global\let\chapmacro=\chfopen
\global\let\unnumbchapmacro=\unnchfopen
\global\let\unnumbchapmacro=\unnchfopen
\global\let\centerchapmacro=\centerchfopen}
\global\let\centerchapmacro=\centerchfopen}
 
 
 
 
% Section titles.
% Section titles.
\newskip\secheadingskip
\newskip\secheadingskip
\def\secheadingbreak{\dobreak \secheadingskip {-1000}}
\def\secheadingbreak{\dobreak \secheadingskip {-1000}}
\def\secheading#1#2#3{\sectionheading{sec}{#2.#3}{#1}}
\def\secheading#1#2#3{\sectionheading{sec}{#2.#3}{#1}}
\def\plainsecheading#1{\sectionheading{sec}{}{#1}}
\def\plainsecheading#1{\sectionheading{sec}{}{#1}}
 
 
% Subsection titles.
% Subsection titles.
\newskip \subsecheadingskip
\newskip \subsecheadingskip
\def\subsecheadingbreak{\dobreak \subsecheadingskip {-500}}
\def\subsecheadingbreak{\dobreak \subsecheadingskip {-500}}
\def\subsecheading#1#2#3#4{\sectionheading{subsec}{#2.#3.#4}{#1}}
\def\subsecheading#1#2#3#4{\sectionheading{subsec}{#2.#3.#4}{#1}}
\def\plainsubsecheading#1{\sectionheading{subsec}{}{#1}}
\def\plainsubsecheading#1{\sectionheading{subsec}{}{#1}}
 
 
% Subsubsection titles.
% Subsubsection titles.
\let\subsubsecheadingskip = \subsecheadingskip
\let\subsubsecheadingskip = \subsecheadingskip
\let\subsubsecheadingbreak = \subsecheadingbreak
\let\subsubsecheadingbreak = \subsecheadingbreak
\def\subsubsecheading#1#2#3#4#5{\sectionheading{subsubsec}{#2.#3.#4.#5}{#1}}
\def\subsubsecheading#1#2#3#4#5{\sectionheading{subsubsec}{#2.#3.#4.#5}{#1}}
\def\plainsubsubsecheading#1{\sectionheading{subsubsec}{}{#1}}
\def\plainsubsubsecheading#1{\sectionheading{subsubsec}{}{#1}}
 
 
 
 
% Print any size section title.
% Print any size section title.
%
%
% #1 is the section type (sec/subsec/subsubsec), #2 is the section
% #1 is the section type (sec/subsec/subsubsec), #2 is the section
% number (maybe empty), #3 the text.
% number (maybe empty), #3 the text.
\def\sectionheading#1#2#3{%
\def\sectionheading#1#2#3{%
  {%
  {%
    \expandafter\advance\csname #1headingskip\endcsname by \parskip
    \expandafter\advance\csname #1headingskip\endcsname by \parskip
    \csname #1headingbreak\endcsname
    \csname #1headingbreak\endcsname
  }%
  }%
  {%
  {%
    % Switch to the right set of fonts.
    % Switch to the right set of fonts.
    \csname #1fonts\endcsname \rm
    \csname #1fonts\endcsname \rm
    %
    %
    % Only insert the separating space if we have a section number.
    % Only insert the separating space if we have a section number.
    \def\secnum{#2}%
    \def\secnum{#2}%
    \setbox0 = \hbox{#2\ifx\secnum\empty\else\enspace\fi}%
    \setbox0 = \hbox{#2\ifx\secnum\empty\else\enspace\fi}%
    %
    %
    \vbox{\hyphenpenalty=10000 \tolerance=5000 \parindent=0pt \raggedright
    \vbox{\hyphenpenalty=10000 \tolerance=5000 \parindent=0pt \raggedright
          \hangindent = \wd0 % zero if no section number
          \hangindent = \wd0 % zero if no section number
          \unhbox0 #3}%
          \unhbox0 #3}%
  }%
  }%
  \ifdim\parskip<10pt \nobreak\kern10pt\nobreak\kern-\parskip\fi \nobreak
  \ifdim\parskip<10pt \nobreak\kern10pt\nobreak\kern-\parskip\fi \nobreak
}
}
 
 
 
 
\message{toc,}
\message{toc,}
\newwrite\tocfile
\newwrite\tocfile
 
 
% Write an entry to the toc file, opening it if necessary.
% Write an entry to the toc file, opening it if necessary.
% Called from @chapter, etc.  We supply {\folio} at the end of the
% Called from @chapter, etc.  We supply {\folio} at the end of the
% argument, which will end up as the last argument to the \...entry macro.
% argument, which will end up as the last argument to the \...entry macro.
%
%
% We open the .toc file here instead of at @setfilename or any other
% We open the .toc file here instead of at @setfilename or any other
% given time so that @contents can be put in the document anywhere.
% given time so that @contents can be put in the document anywhere.
%
%
\newif\iftocfileopened
\newif\iftocfileopened
\def\writetocentry#1{%
\def\writetocentry#1{%
  \iftocfileopened\else
  \iftocfileopened\else
    \immediate\openout\tocfile = \jobname.toc
    \immediate\openout\tocfile = \jobname.toc
    \global\tocfileopenedtrue
    \global\tocfileopenedtrue
  \fi
  \fi
  \iflinks \write\tocfile{#1{\folio}}\fi
  \iflinks \write\tocfile{#1{\folio}}\fi
}
}
 
 
\newskip\contentsrightmargin \contentsrightmargin=1in
\newskip\contentsrightmargin \contentsrightmargin=1in
\newcount\savepageno
\newcount\savepageno
\newcount\lastnegativepageno \lastnegativepageno = -1
\newcount\lastnegativepageno \lastnegativepageno = -1
 
 
% Finish up the main text and prepare to read what we've written
% Finish up the main text and prepare to read what we've written
% to \tocfile.
% to \tocfile.
%
%
\def\startcontents#1{%
\def\startcontents#1{%
   % If @setchapternewpage on, and @headings double, the contents should
   % If @setchapternewpage on, and @headings double, the contents should
   % start on an odd page, unlike chapters.  Thus, we maintain
   % start on an odd page, unlike chapters.  Thus, we maintain
   % \contentsalignmacro in parallel with \pagealignmacro.
   % \contentsalignmacro in parallel with \pagealignmacro.
   % From: Torbjorn Granlund <tege@matematik.su.se>
   % From: Torbjorn Granlund <tege@matematik.su.se>
   \contentsalignmacro
   \contentsalignmacro
   \immediate\closeout\tocfile
   \immediate\closeout\tocfile
   %
   %
   % Don't need to put `Contents' or `Short Contents' in the headline.
   % Don't need to put `Contents' or `Short Contents' in the headline.
   % It is abundantly clear what they are.
   % It is abundantly clear what they are.
   \unnumbchapmacro{#1}\def\thischapter{}%
   \unnumbchapmacro{#1}\def\thischapter{}%
   \savepageno = \pageno
   \savepageno = \pageno
   \begingroup                  % Set up to handle contents files properly.
   \begingroup                  % Set up to handle contents files properly.
      \catcode`\\=0  \catcode`\{=1  \catcode`\}=2  \catcode`\@=11
      \catcode`\\=0  \catcode`\{=1  \catcode`\}=2  \catcode`\@=11
      % We can't do this, because then an actual ^ in a section
      % We can't do this, because then an actual ^ in a section
      % title fails, e.g., @chapter ^ -- exponentiation.  --karl, 9jul97.
      % title fails, e.g., @chapter ^ -- exponentiation.  --karl, 9jul97.
      %\catcode`\^=7 % to see ^^e4 as \"a etc. juha@piuha.ydi.vtt.fi
      %\catcode`\^=7 % to see ^^e4 as \"a etc. juha@piuha.ydi.vtt.fi
      \raggedbottom             % Worry more about breakpoints than the bottom.
      \raggedbottom             % Worry more about breakpoints than the bottom.
      \advance\hsize by -\contentsrightmargin % Don't use the full line length.
      \advance\hsize by -\contentsrightmargin % Don't use the full line length.
      %
      %
      % Roman numerals for page numbers.
      % Roman numerals for page numbers.
      \ifnum \pageno>0 \pageno = \lastnegativepageno \fi
      \ifnum \pageno>0 \pageno = \lastnegativepageno \fi
}
}
 
 
 
 
% Normal (long) toc.
% Normal (long) toc.
\def\contents{%
\def\contents{%
   \startcontents{\putwordTableofContents}%
   \startcontents{\putwordTableofContents}%
     \openin 1 \jobname.toc
     \openin 1 \jobname.toc
     \ifeof 1 \else
     \ifeof 1 \else
       \closein 1
       \closein 1
       \input \jobname.toc
       \input \jobname.toc
     \fi
     \fi
     \vfill \eject
     \vfill \eject
   \endgroup
   \endgroup
   \lastnegativepageno = \pageno
   \lastnegativepageno = \pageno
   \pageno = \savepageno
   \pageno = \savepageno
}
}
 
 
% And just the chapters.
% And just the chapters.
\def\summarycontents{%
\def\summarycontents{%
   \startcontents{\putwordShortContents}%
   \startcontents{\putwordShortContents}%
      %
      %
      \let\chapentry = \shortchapentry
      \let\chapentry = \shortchapentry
      \let\unnumbchapentry = \shortunnumberedentry
      \let\unnumbchapentry = \shortunnumberedentry
      % We want a true roman here for the page numbers.
      % We want a true roman here for the page numbers.
      \secfonts
      \secfonts
      \let\rm=\shortcontrm \let\bf=\shortcontbf \let\sl=\shortcontsl
      \let\rm=\shortcontrm \let\bf=\shortcontbf \let\sl=\shortcontsl
      \rm
      \rm
      \hyphenpenalty = 10000
      \hyphenpenalty = 10000
      \advance\baselineskip by 1pt % Open it up a little.
      \advance\baselineskip by 1pt % Open it up a little.
      \def\secentry ##1##2##3##4{}
      \def\secentry ##1##2##3##4{}
      \def\unnumbsecentry ##1##2{}
      \def\unnumbsecentry ##1##2{}
      \def\subsecentry ##1##2##3##4##5{}
      \def\subsecentry ##1##2##3##4##5{}
      \def\unnumbsubsecentry ##1##2{}
      \def\unnumbsubsecentry ##1##2{}
      \def\subsubsecentry ##1##2##3##4##5##6{}
      \def\subsubsecentry ##1##2##3##4##5##6{}
      \def\unnumbsubsubsecentry ##1##2{}
      \def\unnumbsubsubsecentry ##1##2{}
      \openin 1 \jobname.toc
      \openin 1 \jobname.toc
      \ifeof 1 \else
      \ifeof 1 \else
        \closein 1
        \closein 1
        \input \jobname.toc
        \input \jobname.toc
      \fi
      \fi
     \vfill \eject
     \vfill \eject
   \endgroup
   \endgroup
   \lastnegativepageno = \pageno
   \lastnegativepageno = \pageno
   \pageno = \savepageno
   \pageno = \savepageno
}
}
\let\shortcontents = \summarycontents
\let\shortcontents = \summarycontents
 
 
% These macros generate individual entries in the table of contents.
% These macros generate individual entries in the table of contents.
% The first argument is the chapter or section name.
% The first argument is the chapter or section name.
% The last argument is the page number.
% The last argument is the page number.
% The arguments in between are the chapter number, section number, ...
% The arguments in between are the chapter number, section number, ...
 
 
% Chapter-level things, for both the long and short contents.
% Chapter-level things, for both the long and short contents.
\def\chapentry#1#2#3{\dochapentry{#2\labelspace#1}{#3}}
\def\chapentry#1#2#3{\dochapentry{#2\labelspace#1}{#3}}
 
 
% See comments in \dochapentry re vbox and related settings
% See comments in \dochapentry re vbox and related settings
\def\shortchapentry#1#2#3{%
\def\shortchapentry#1#2#3{%
  \tocentry{\shortchaplabel{#2}\labelspace #1}{\doshortpageno{#3}}%
  \tocentry{\shortchaplabel{#2}\labelspace #1}{\doshortpageno{#3}}%
}
}
 
 
% Typeset the label for a chapter or appendix for the short contents.
% Typeset the label for a chapter or appendix for the short contents.
% The arg is, e.g. `Appendix A' for an appendix, or `3' for a chapter.
% The arg is, e.g. `Appendix A' for an appendix, or `3' for a chapter.
% We could simplify the code here by writing out an \appendixentry
% We could simplify the code here by writing out an \appendixentry
% command in the toc file for appendices, instead of using \chapentry
% command in the toc file for appendices, instead of using \chapentry
% for both, but it doesn't seem worth it.
% for both, but it doesn't seem worth it.
\setbox0 = \hbox{\shortcontrm \putwordAppendix }
\setbox0 = \hbox{\shortcontrm \putwordAppendix }
\newdimen\shortappendixwidth \shortappendixwidth = \wd0
\newdimen\shortappendixwidth \shortappendixwidth = \wd0
 
 
\def\shortchaplabel#1{%
\def\shortchaplabel#1{%
  % We typeset #1 in a box of constant width, regardless of the text of
  % We typeset #1 in a box of constant width, regardless of the text of
  % #1, so the chapter titles will come out aligned.
  % #1, so the chapter titles will come out aligned.
  \setbox0 = \hbox{#1}%
  \setbox0 = \hbox{#1}%
  \dimen0 = \ifdim\wd0 > \shortappendixwidth \shortappendixwidth \else 0pt \fi
  \dimen0 = \ifdim\wd0 > \shortappendixwidth \shortappendixwidth \else 0pt \fi
  %
  %
  % This space should be plenty, since a single number is .5em, and the
  % This space should be plenty, since a single number is .5em, and the
  % widest letter (M) is 1em, at least in the Computer Modern fonts.
  % widest letter (M) is 1em, at least in the Computer Modern fonts.
  % (This space doesn't include the extra space that gets added after
  % (This space doesn't include the extra space that gets added after
  % the label; that gets put in by \shortchapentry above.)
  % the label; that gets put in by \shortchapentry above.)
  \advance\dimen0 by 1.1em
  \advance\dimen0 by 1.1em
  \hbox to \dimen0{#1\hfil}%
  \hbox to \dimen0{#1\hfil}%
}
}
 
 
\def\unnumbchapentry#1#2{\dochapentry{#1}{#2}}
\def\unnumbchapentry#1#2{\dochapentry{#1}{#2}}
\def\shortunnumberedentry#1#2{\tocentry{#1}{\doshortpageno{#2}}}
\def\shortunnumberedentry#1#2{\tocentry{#1}{\doshortpageno{#2}}}
 
 
% Sections.
% Sections.
\def\secentry#1#2#3#4{\dosecentry{#2.#3\labelspace#1}{#4}}
\def\secentry#1#2#3#4{\dosecentry{#2.#3\labelspace#1}{#4}}
\def\unnumbsecentry#1#2{\dosecentry{#1}{#2}}
\def\unnumbsecentry#1#2{\dosecentry{#1}{#2}}
 
 
% Subsections.
% Subsections.
\def\subsecentry#1#2#3#4#5{\dosubsecentry{#2.#3.#4\labelspace#1}{#5}}
\def\subsecentry#1#2#3#4#5{\dosubsecentry{#2.#3.#4\labelspace#1}{#5}}
\def\unnumbsubsecentry#1#2{\dosubsecentry{#1}{#2}}
\def\unnumbsubsecentry#1#2{\dosubsecentry{#1}{#2}}
 
 
% And subsubsections.
% And subsubsections.
\def\subsubsecentry#1#2#3#4#5#6{%
\def\subsubsecentry#1#2#3#4#5#6{%
  \dosubsubsecentry{#2.#3.#4.#5\labelspace#1}{#6}}
  \dosubsubsecentry{#2.#3.#4.#5\labelspace#1}{#6}}
\def\unnumbsubsubsecentry#1#2{\dosubsubsecentry{#1}{#2}}
\def\unnumbsubsubsecentry#1#2{\dosubsubsecentry{#1}{#2}}
 
 
% This parameter controls the indentation of the various levels.
% This parameter controls the indentation of the various levels.
\newdimen\tocindent \tocindent = 3pc
\newdimen\tocindent \tocindent = 3pc
 
 
% Now for the actual typesetting. In all these, #1 is the text and #2 is the
% Now for the actual typesetting. In all these, #1 is the text and #2 is the
% page number.
% page number.
%
%
% If the toc has to be broken over pages, we want it to be at chapters
% If the toc has to be broken over pages, we want it to be at chapters
% if at all possible; hence the \penalty.
% if at all possible; hence the \penalty.
\def\dochapentry#1#2{%
\def\dochapentry#1#2{%
   \penalty-300 \vskip1\baselineskip plus.33\baselineskip minus.25\baselineskip
   \penalty-300 \vskip1\baselineskip plus.33\baselineskip minus.25\baselineskip
   \begingroup
   \begingroup
     \chapentryfonts
     \chapentryfonts
     \tocentry{#1}{\dopageno{#2}}%
     \tocentry{#1}{\dopageno{#2}}%
   \endgroup
   \endgroup
   \nobreak\vskip .25\baselineskip plus.1\baselineskip
   \nobreak\vskip .25\baselineskip plus.1\baselineskip
}
}
 
 
\def\dosecentry#1#2{\begingroup
\def\dosecentry#1#2{\begingroup
  \secentryfonts \leftskip=\tocindent
  \secentryfonts \leftskip=\tocindent
  \tocentry{#1}{\dopageno{#2}}%
  \tocentry{#1}{\dopageno{#2}}%
\endgroup}
\endgroup}
 
 
\def\dosubsecentry#1#2{\begingroup
\def\dosubsecentry#1#2{\begingroup
  \subsecentryfonts \leftskip=2\tocindent
  \subsecentryfonts \leftskip=2\tocindent
  \tocentry{#1}{\dopageno{#2}}%
  \tocentry{#1}{\dopageno{#2}}%
\endgroup}
\endgroup}
 
 
\def\dosubsubsecentry#1#2{\begingroup
\def\dosubsubsecentry#1#2{\begingroup
  \subsubsecentryfonts \leftskip=3\tocindent
  \subsubsecentryfonts \leftskip=3\tocindent
  \tocentry{#1}{\dopageno{#2}}%
  \tocentry{#1}{\dopageno{#2}}%
\endgroup}
\endgroup}
 
 
% Final typesetting of a toc entry; we use the same \entry macro as for
% Final typesetting of a toc entry; we use the same \entry macro as for
% the index entries, but we want to suppress hyphenation here.  (We
% the index entries, but we want to suppress hyphenation here.  (We
% can't do that in the \entry macro, since index entries might consist
% can't do that in the \entry macro, since index entries might consist
% of hyphenated-identifiers-that-do-not-fit-on-a-line-and-nothing-else.)
% of hyphenated-identifiers-that-do-not-fit-on-a-line-and-nothing-else.)
\def\tocentry#1#2{\begingroup
\def\tocentry#1#2{\begingroup
  \vskip 0pt plus1pt % allow a little stretch for the sake of nice page breaks
  \vskip 0pt plus1pt % allow a little stretch for the sake of nice page breaks
  % Do not use \turnoffactive in these arguments.  Since the toc is
  % Do not use \turnoffactive in these arguments.  Since the toc is
  % typeset in cmr, so characters such as _ would come out wrong; we
  % typeset in cmr, so characters such as _ would come out wrong; we
  % have to do the usual translation tricks.
  % have to do the usual translation tricks.
  \entry{#1}{#2}%
  \entry{#1}{#2}%
\endgroup}
\endgroup}
 
 
% Space between chapter (or whatever) number and the title.
% Space between chapter (or whatever) number and the title.
\def\labelspace{\hskip1em \relax}
\def\labelspace{\hskip1em \relax}
 
 
\def\dopageno#1{{\rm #1}}
\def\dopageno#1{{\rm #1}}
\def\doshortpageno#1{{\rm #1}}
\def\doshortpageno#1{{\rm #1}}
 
 
\def\chapentryfonts{\secfonts \rm}
\def\chapentryfonts{\secfonts \rm}
\def\secentryfonts{\textfonts}
\def\secentryfonts{\textfonts}
\let\subsecentryfonts = \textfonts
\let\subsecentryfonts = \textfonts
\let\subsubsecentryfonts = \textfonts
\let\subsubsecentryfonts = \textfonts
 
 
 
 
\message{environments,}
\message{environments,}
 
 
% Since these characters are used in examples, it should be an even number of
% Since these characters are used in examples, it should be an even number of
% \tt widths. Each \tt character is 1en, so two makes it 1em.
% \tt widths. Each \tt character is 1en, so two makes it 1em.
% Furthermore, these definitions must come after we define our fonts.
% Furthermore, these definitions must come after we define our fonts.
\newbox\dblarrowbox    \newbox\longdblarrowbox
\newbox\dblarrowbox    \newbox\longdblarrowbox
\newbox\pushcharbox    \newbox\bullbox
\newbox\pushcharbox    \newbox\bullbox
\newbox\equivbox       \newbox\errorbox
\newbox\equivbox       \newbox\errorbox
 
 
%{\tentt
%{\tentt
%\global\setbox\dblarrowbox = \hbox to 1em{\hfil$\Rightarrow$\hfil}
%\global\setbox\dblarrowbox = \hbox to 1em{\hfil$\Rightarrow$\hfil}
%\global\setbox\longdblarrowbox = \hbox to 1em{\hfil$\mapsto$\hfil}
%\global\setbox\longdblarrowbox = \hbox to 1em{\hfil$\mapsto$\hfil}
%\global\setbox\pushcharbox = \hbox to 1em{\hfil$\dashv$\hfil}
%\global\setbox\pushcharbox = \hbox to 1em{\hfil$\dashv$\hfil}
%\global\setbox\equivbox = \hbox to 1em{\hfil$\ptexequiv$\hfil}
%\global\setbox\equivbox = \hbox to 1em{\hfil$\ptexequiv$\hfil}
% Adapted from the manmac format (p.420 of TeXbook)
% Adapted from the manmac format (p.420 of TeXbook)
%\global\setbox\bullbox = \hbox to 1em{\kern.15em\vrule height .75ex width .85ex
%\global\setbox\bullbox = \hbox to 1em{\kern.15em\vrule height .75ex width .85ex
%                                      depth .1ex\hfil}
%                                      depth .1ex\hfil}
%}
%}
 
 
% @point{}, @result{}, @expansion{}, @print{}, @equiv{}.
% @point{}, @result{}, @expansion{}, @print{}, @equiv{}.
\def\point{$\star$}
\def\point{$\star$}
\def\result{\leavevmode\raise.15ex\hbox to 1em{\hfil$\Rightarrow$\hfil}}
\def\result{\leavevmode\raise.15ex\hbox to 1em{\hfil$\Rightarrow$\hfil}}
\def\expansion{\leavevmode\raise.1ex\hbox to 1em{\hfil$\mapsto$\hfil}}
\def\expansion{\leavevmode\raise.1ex\hbox to 1em{\hfil$\mapsto$\hfil}}
\def\print{\leavevmode\lower.1ex\hbox to 1em{\hfil$\dashv$\hfil}}
\def\print{\leavevmode\lower.1ex\hbox to 1em{\hfil$\dashv$\hfil}}
\def\equiv{\leavevmode\lower.1ex\hbox to 1em{\hfil$\ptexequiv$\hfil}}
\def\equiv{\leavevmode\lower.1ex\hbox to 1em{\hfil$\ptexequiv$\hfil}}
 
 
% Adapted from the TeXbook's \boxit.
% Adapted from the TeXbook's \boxit.
{\tentt \global\dimen0 = 3em}% Width of the box.
{\tentt \global\dimen0 = 3em}% Width of the box.
\dimen2 = .55pt % Thickness of rules
\dimen2 = .55pt % Thickness of rules
% The text. (`r' is open on the right, `e' somewhat less so on the left.)
% The text. (`r' is open on the right, `e' somewhat less so on the left.)
\setbox0 = \hbox{\kern-.75pt \tensf error\kern-1.5pt}
\setbox0 = \hbox{\kern-.75pt \tensf error\kern-1.5pt}
 
 
\global\setbox\errorbox=\hbox to \dimen0{\hfil
\global\setbox\errorbox=\hbox to \dimen0{\hfil
   \hsize = \dimen0 \advance\hsize by -5.8pt % Space to left+right.
   \hsize = \dimen0 \advance\hsize by -5.8pt % Space to left+right.
   \advance\hsize by -2\dimen2 % Rules.
   \advance\hsize by -2\dimen2 % Rules.
   \vbox{
   \vbox{
      \hrule height\dimen2
      \hrule height\dimen2
      \hbox{\vrule width\dimen2 \kern3pt          % Space to left of text.
      \hbox{\vrule width\dimen2 \kern3pt          % Space to left of text.
         \vtop{\kern2.4pt \box0 \kern2.4pt}% Space above/below.
         \vtop{\kern2.4pt \box0 \kern2.4pt}% Space above/below.
         \kern3pt\vrule width\dimen2}% Space to right.
         \kern3pt\vrule width\dimen2}% Space to right.
      \hrule height\dimen2}
      \hrule height\dimen2}
    \hfil}
    \hfil}
 
 
% The @error{} command.
% The @error{} command.
\def\error{\leavevmode\lower.7ex\copy\errorbox}
\def\error{\leavevmode\lower.7ex\copy\errorbox}
 
 
% @tex ... @end tex    escapes into raw Tex temporarily.
% @tex ... @end tex    escapes into raw Tex temporarily.
% One exception: @ is still an escape character, so that @end tex works.
% One exception: @ is still an escape character, so that @end tex works.
% But \@ or @@ will get a plain tex @ character.
% But \@ or @@ will get a plain tex @ character.
 
 
\def\tex{\begingroup
\def\tex{\begingroup
  \catcode `\\=0 \catcode `\{=1 \catcode `\}=2
  \catcode `\\=0 \catcode `\{=1 \catcode `\}=2
  \catcode `\$=3 \catcode `\&=4 \catcode `\#=6
  \catcode `\$=3 \catcode `\&=4 \catcode `\#=6
  \catcode `\^=7 \catcode `\_=8 \catcode `\~=13 \let~=\tie
  \catcode `\^=7 \catcode `\_=8 \catcode `\~=13 \let~=\tie
  \catcode `\%=14
  \catcode `\%=14
  \catcode 43=12 % plus
  \catcode 43=12 % plus
  \catcode`\"=12
  \catcode`\"=12
  \catcode`\==12
  \catcode`\==12
  \catcode`\|=12
  \catcode`\|=12
  \catcode`\<=12
  \catcode`\<=12
  \catcode`\>=12
  \catcode`\>=12
  \escapechar=`\\
  \escapechar=`\\
  %
  %
  \let\b=\ptexb
  \let\b=\ptexb
  \let\bullet=\ptexbullet
  \let\bullet=\ptexbullet
  \let\c=\ptexc
  \let\c=\ptexc
  \let\,=\ptexcomma
  \let\,=\ptexcomma
  \let\.=\ptexdot
  \let\.=\ptexdot
  \let\dots=\ptexdots
  \let\dots=\ptexdots
  \let\equiv=\ptexequiv
  \let\equiv=\ptexequiv
  \let\!=\ptexexclam
  \let\!=\ptexexclam
  \let\i=\ptexi
  \let\i=\ptexi
  \let\{=\ptexlbrace
  \let\{=\ptexlbrace
  \let\+=\tabalign
  \let\+=\tabalign
  \let\}=\ptexrbrace
  \let\}=\ptexrbrace
  \let\*=\ptexstar
  \let\*=\ptexstar
  \let\t=\ptext
  \let\t=\ptext
  %
  %
  \def\endldots{\mathinner{\ldots\ldots\ldots\ldots}}%
  \def\endldots{\mathinner{\ldots\ldots\ldots\ldots}}%
  \def\enddots{\relax\ifmmode\endldots\else$\mathsurround=0pt \endldots\,$\fi}%
  \def\enddots{\relax\ifmmode\endldots\else$\mathsurround=0pt \endldots\,$\fi}%
  \def\@{@}%
  \def\@{@}%
\let\Etex=\endgroup}
\let\Etex=\endgroup}
 
 
% Define @lisp ... @endlisp.
% Define @lisp ... @endlisp.
% @lisp does a \begingroup so it can rebind things,
% @lisp does a \begingroup so it can rebind things,
% including the definition of @endlisp (which normally is erroneous).
% including the definition of @endlisp (which normally is erroneous).
 
 
% Amount to narrow the margins by for @lisp.
% Amount to narrow the margins by for @lisp.
\newskip\lispnarrowing \lispnarrowing=0.4in
\newskip\lispnarrowing \lispnarrowing=0.4in
 
 
% This is the definition that ^^M gets inside @lisp, @example, and other
% This is the definition that ^^M gets inside @lisp, @example, and other
% such environments.  \null is better than a space, since it doesn't
% such environments.  \null is better than a space, since it doesn't
% have any width.
% have any width.
\def\lisppar{\null\endgraf}
\def\lisppar{\null\endgraf}
 
 
% Make each space character in the input produce a normal interword
% Make each space character in the input produce a normal interword
% space in the output.  Don't allow a line break at this space, as this
% space in the output.  Don't allow a line break at this space, as this
% is used only in environments like @example, where each line of input
% is used only in environments like @example, where each line of input
% should produce a line of output anyway.
% should produce a line of output anyway.
%
%
{\obeyspaces %
{\obeyspaces %
\gdef\sepspaces{\obeyspaces\let =\tie}}
\gdef\sepspaces{\obeyspaces\let =\tie}}
 
 
% Define \obeyedspace to be our active space, whatever it is.  This is
% Define \obeyedspace to be our active space, whatever it is.  This is
% for use in \parsearg.
% for use in \parsearg.
{\sepspaces%
{\sepspaces%
\global\let\obeyedspace= }
\global\let\obeyedspace= }
 
 
% This space is always present above and below environments.
% This space is always present above and below environments.
\newskip\envskipamount \envskipamount = 0pt
\newskip\envskipamount \envskipamount = 0pt
 
 
% Make spacing and below environment symmetrical.  We use \parskip here
% Make spacing and below environment symmetrical.  We use \parskip here
% to help in doing that, since in @example-like environments \parskip
% to help in doing that, since in @example-like environments \parskip
% is reset to zero; thus the \afterenvbreak inserts no space -- but the
% is reset to zero; thus the \afterenvbreak inserts no space -- but the
% start of the next paragraph will insert \parskip
% start of the next paragraph will insert \parskip
%
%
\def\aboveenvbreak{{\advance\envskipamount by \parskip
\def\aboveenvbreak{{\advance\envskipamount by \parskip
\endgraf \ifdim\lastskip<\envskipamount
\endgraf \ifdim\lastskip<\envskipamount
\removelastskip \penalty-50 \vskip\envskipamount \fi}}
\removelastskip \penalty-50 \vskip\envskipamount \fi}}
 
 
\let\afterenvbreak = \aboveenvbreak
\let\afterenvbreak = \aboveenvbreak
 
 
% \nonarrowing is a flag.  If "set", @lisp etc don't narrow margins.
% \nonarrowing is a flag.  If "set", @lisp etc don't narrow margins.
\let\nonarrowing=\relax
\let\nonarrowing=\relax
 
 
% @cartouche ... @end cartouche: draw rectangle w/rounded corners around
% @cartouche ... @end cartouche: draw rectangle w/rounded corners around
% environment contents.
% environment contents.
\font\circle=lcircle10
\font\circle=lcircle10
\newdimen\circthick
\newdimen\circthick
\newdimen\cartouter\newdimen\cartinner
\newdimen\cartouter\newdimen\cartinner
\newskip\normbskip\newskip\normpskip\newskip\normlskip
\newskip\normbskip\newskip\normpskip\newskip\normlskip
\circthick=\fontdimen8\circle
\circthick=\fontdimen8\circle
%
%
\def\ctl{{\circle\char'013\hskip -6pt}}% 6pt from pl file: 1/2charwidth
\def\ctl{{\circle\char'013\hskip -6pt}}% 6pt from pl file: 1/2charwidth
\def\ctr{{\hskip 6pt\circle\char'010}}
\def\ctr{{\hskip 6pt\circle\char'010}}
\def\cbl{{\circle\char'012\hskip -6pt}}
\def\cbl{{\circle\char'012\hskip -6pt}}
\def\cbr{{\hskip 6pt\circle\char'011}}
\def\cbr{{\hskip 6pt\circle\char'011}}
\def\carttop{\hbox to \cartouter{\hskip\lskip
\def\carttop{\hbox to \cartouter{\hskip\lskip
        \ctl\leaders\hrule height\circthick\hfil\ctr
        \ctl\leaders\hrule height\circthick\hfil\ctr
        \hskip\rskip}}
        \hskip\rskip}}
\def\cartbot{\hbox to \cartouter{\hskip\lskip
\def\cartbot{\hbox to \cartouter{\hskip\lskip
        \cbl\leaders\hrule height\circthick\hfil\cbr
        \cbl\leaders\hrule height\circthick\hfil\cbr
        \hskip\rskip}}
        \hskip\rskip}}
%
%
\newskip\lskip\newskip\rskip
\newskip\lskip\newskip\rskip
 
 
\long\def\cartouche{%
\long\def\cartouche{%
\begingroup
\begingroup
        \lskip=\leftskip \rskip=\rightskip
        \lskip=\leftskip \rskip=\rightskip
        \leftskip=0pt\rightskip=0pt %we want these *outside*.
        \leftskip=0pt\rightskip=0pt %we want these *outside*.
        \cartinner=\hsize \advance\cartinner by-\lskip
        \cartinner=\hsize \advance\cartinner by-\lskip
                          \advance\cartinner by-\rskip
                          \advance\cartinner by-\rskip
        \cartouter=\hsize
        \cartouter=\hsize
        \advance\cartouter by 18.4pt % allow for 3pt kerns on either
        \advance\cartouter by 18.4pt % allow for 3pt kerns on either
%                                    side, and for 6pt waste from
%                                    side, and for 6pt waste from
%                                    each corner char, and rule thickness
%                                    each corner char, and rule thickness
        \normbskip=\baselineskip \normpskip=\parskip \normlskip=\lineskip
        \normbskip=\baselineskip \normpskip=\parskip \normlskip=\lineskip
        % Flag to tell @lisp, etc., not to narrow margin.
        % Flag to tell @lisp, etc., not to narrow margin.
        \let\nonarrowing=\comment
        \let\nonarrowing=\comment
        \vbox\bgroup
        \vbox\bgroup
                \baselineskip=0pt\parskip=0pt\lineskip=0pt
                \baselineskip=0pt\parskip=0pt\lineskip=0pt
                \carttop
                \carttop
                \hbox\bgroup
                \hbox\bgroup
                        \hskip\lskip
                        \hskip\lskip
                        \vrule\kern3pt
                        \vrule\kern3pt
                        \vbox\bgroup
                        \vbox\bgroup
                                \hsize=\cartinner
                                \hsize=\cartinner
                                \kern3pt
                                \kern3pt
                                \begingroup
                                \begingroup
                                        \baselineskip=\normbskip
                                        \baselineskip=\normbskip
                                        \lineskip=\normlskip
                                        \lineskip=\normlskip
                                        \parskip=\normpskip
                                        \parskip=\normpskip
                                        \vskip -\parskip
                                        \vskip -\parskip
\def\Ecartouche{%
\def\Ecartouche{%
                                \endgroup
                                \endgroup
                                \kern3pt
                                \kern3pt
                        \egroup
                        \egroup
                        \kern3pt\vrule
                        \kern3pt\vrule
                        \hskip\rskip
                        \hskip\rskip
                \egroup
                \egroup
                \cartbot
                \cartbot
        \egroup
        \egroup
\endgroup
\endgroup
}}
}}
 
 
 
 
% This macro is called at the beginning of all the @example variants,
% This macro is called at the beginning of all the @example variants,
% inside a group.
% inside a group.
\def\nonfillstart{%
\def\nonfillstart{%
  \aboveenvbreak
  \aboveenvbreak
  \inENV % This group ends at the end of the body
  \inENV % This group ends at the end of the body
  \hfuzz = 12pt % Don't be fussy
  \hfuzz = 12pt % Don't be fussy
  \sepspaces % Make spaces be word-separators rather than space tokens.
  \sepspaces % Make spaces be word-separators rather than space tokens.
  \singlespace
  \singlespace
  \let\par = \lisppar % don't ignore blank lines
  \let\par = \lisppar % don't ignore blank lines
  \obeylines % each line of input is a line of output
  \obeylines % each line of input is a line of output
  \parskip = 0pt
  \parskip = 0pt
  \parindent = 0pt
  \parindent = 0pt
  \emergencystretch = 0pt % don't try to avoid overfull boxes
  \emergencystretch = 0pt % don't try to avoid overfull boxes
  % @cartouche defines \nonarrowing to inhibit narrowing
  % @cartouche defines \nonarrowing to inhibit narrowing
  % at next level down.
  % at next level down.
  \ifx\nonarrowing\relax
  \ifx\nonarrowing\relax
    \advance \leftskip by \lispnarrowing
    \advance \leftskip by \lispnarrowing
    \exdentamount=\lispnarrowing
    \exdentamount=\lispnarrowing
    \let\exdent=\nofillexdent
    \let\exdent=\nofillexdent
    \let\nonarrowing=\relax
    \let\nonarrowing=\relax
  \fi
  \fi
}
}
 
 
% Define the \E... control sequence only if we are inside the particular
% Define the \E... control sequence only if we are inside the particular
% environment, so the error checking in \end will work.
% environment, so the error checking in \end will work.
%
%
% To end an @example-like environment, we first end the paragraph (via
% To end an @example-like environment, we first end the paragraph (via
% \afterenvbreak's vertical glue), and then the group.  That way we keep
% \afterenvbreak's vertical glue), and then the group.  That way we keep
% the zero \parskip that the environments set -- \parskip glue will be
% the zero \parskip that the environments set -- \parskip glue will be
% inserted at the beginning of the next paragraph in the document, after
% inserted at the beginning of the next paragraph in the document, after
% the environment.
% the environment.
%
%
\def\nonfillfinish{\afterenvbreak\endgroup}
\def\nonfillfinish{\afterenvbreak\endgroup}
 
 
% @lisp: indented, narrowed, typewriter font.
% @lisp: indented, narrowed, typewriter font.
\def\lisp{\begingroup
\def\lisp{\begingroup
  \nonfillstart
  \nonfillstart
  \let\Elisp = \nonfillfinish
  \let\Elisp = \nonfillfinish
  \tt
  \tt
  \let\kbdfont = \kbdexamplefont % Allow @kbd to do something special.
  \let\kbdfont = \kbdexamplefont % Allow @kbd to do something special.
  \gobble       % eat return
  \gobble       % eat return
}
}
 
 
% @example: Same as @lisp.
% @example: Same as @lisp.
\def\example{\begingroup \def\Eexample{\nonfillfinish\endgroup}\lisp}
\def\example{\begingroup \def\Eexample{\nonfillfinish\endgroup}\lisp}
 
 
% @small... is usually equivalent to the non-small (@smallbook
% @small... is usually equivalent to the non-small (@smallbook
% redefines).  We must call \example (or whatever) last in the
% redefines).  We must call \example (or whatever) last in the
% definition, since it reads the return following the @example (or
% definition, since it reads the return following the @example (or
% whatever) command.
% whatever) command.
%
%
% This actually allows (for example) @end display inside an
% This actually allows (for example) @end display inside an
% @smalldisplay.  Too bad, but makeinfo will catch the error anyway.
% @smalldisplay.  Too bad, but makeinfo will catch the error anyway.
%
%
\def\smalldisplay{\begingroup\def\Esmalldisplay{\nonfillfinish\endgroup}\display}
\def\smalldisplay{\begingroup\def\Esmalldisplay{\nonfillfinish\endgroup}\display}
\def\smallexample{\begingroup\def\Esmallexample{\nonfillfinish\endgroup}\lisp}
\def\smallexample{\begingroup\def\Esmallexample{\nonfillfinish\endgroup}\lisp}
\def\smallformat{\begingroup\def\Esmallformat{\nonfillfinish\endgroup}\format}
\def\smallformat{\begingroup\def\Esmallformat{\nonfillfinish\endgroup}\format}
\def\smalllisp{\begingroup\def\Esmalllisp{\nonfillfinish\endgroup}\lisp}
\def\smalllisp{\begingroup\def\Esmalllisp{\nonfillfinish\endgroup}\lisp}
 
 
% Real @smallexample and @smalllisp (when @smallbook): use smaller fonts.
% Real @smallexample and @smalllisp (when @smallbook): use smaller fonts.
% Originally contributed by Pavel@xerox.
% Originally contributed by Pavel@xerox.
\def\smalllispx{\begingroup
\def\smalllispx{\begingroup
  \def\Esmalllisp{\nonfillfinish\endgroup}%
  \def\Esmalllisp{\nonfillfinish\endgroup}%
  \def\Esmallexample{\nonfillfinish\endgroup}%
  \def\Esmallexample{\nonfillfinish\endgroup}%
  \indexfonts
  \indexfonts
  \lisp
  \lisp
}
}
 
 
% @display: same as @lisp except keep current font.
% @display: same as @lisp except keep current font.
%
%
\def\display{\begingroup
\def\display{\begingroup
  \nonfillstart
  \nonfillstart
  \let\Edisplay = \nonfillfinish
  \let\Edisplay = \nonfillfinish
  \gobble
  \gobble
}
}
 
 
% @smalldisplay (when @smallbook): @display plus smaller fonts.
% @smalldisplay (when @smallbook): @display plus smaller fonts.
%
%
\def\smalldisplayx{\begingroup
\def\smalldisplayx{\begingroup
  \def\Esmalldisplay{\nonfillfinish\endgroup}%
  \def\Esmalldisplay{\nonfillfinish\endgroup}%
  \indexfonts \rm
  \indexfonts \rm
  \display
  \display
}
}
 
 
% @format: same as @display except don't narrow margins.
% @format: same as @display except don't narrow margins.
%
%
\def\format{\begingroup
\def\format{\begingroup
  \let\nonarrowing = t
  \let\nonarrowing = t
  \nonfillstart
  \nonfillstart
  \let\Eformat = \nonfillfinish
  \let\Eformat = \nonfillfinish
  \gobble
  \gobble
}
}
 
 
% @smallformat (when @smallbook): @format plus smaller fonts.
% @smallformat (when @smallbook): @format plus smaller fonts.
%
%
\def\smallformatx{\begingroup
\def\smallformatx{\begingroup
  \def\Esmallformat{\nonfillfinish\endgroup}%
  \def\Esmallformat{\nonfillfinish\endgroup}%
  \indexfonts \rm
  \indexfonts \rm
  \format
  \format
}
}
 
 
% @flushleft (same as @format).
% @flushleft (same as @format).
%
%
\def\flushleft{\begingroup \def\Eflushleft{\nonfillfinish\endgroup}\format}
\def\flushleft{\begingroup \def\Eflushleft{\nonfillfinish\endgroup}\format}
 
 
% @flushright.
% @flushright.
%
%
\def\flushright{\begingroup
\def\flushright{\begingroup
  \let\nonarrowing = t
  \let\nonarrowing = t
  \nonfillstart
  \nonfillstart
  \let\Eflushright = \nonfillfinish
  \let\Eflushright = \nonfillfinish
  \advance\leftskip by 0pt plus 1fill
  \advance\leftskip by 0pt plus 1fill
  \gobble
  \gobble
}
}
 
 
% @quotation does normal linebreaking (hence we can't use \nonfillstart)
% @quotation does normal linebreaking (hence we can't use \nonfillstart)
% and narrows the margins.
% and narrows the margins.
%
%
\def\quotation{%
\def\quotation{%
  \begingroup\inENV %This group ends at the end of the @quotation body
  \begingroup\inENV %This group ends at the end of the @quotation body
  {\parskip=0pt \aboveenvbreak}% because \aboveenvbreak inserts \parskip
  {\parskip=0pt \aboveenvbreak}% because \aboveenvbreak inserts \parskip
  \singlespace
  \singlespace
  \parindent=0pt
  \parindent=0pt
  % We have retained a nonzero parskip for the environment, since we're
  % We have retained a nonzero parskip for the environment, since we're
  % doing normal filling. So to avoid extra space below the environment...
  % doing normal filling. So to avoid extra space below the environment...
  \def\Equotation{\parskip = 0pt \nonfillfinish}%
  \def\Equotation{\parskip = 0pt \nonfillfinish}%
  %
  %
  % @cartouche defines \nonarrowing to inhibit narrowing at next level down.
  % @cartouche defines \nonarrowing to inhibit narrowing at next level down.
  \ifx\nonarrowing\relax
  \ifx\nonarrowing\relax
    \advance\leftskip by \lispnarrowing
    \advance\leftskip by \lispnarrowing
    \advance\rightskip by \lispnarrowing
    \advance\rightskip by \lispnarrowing
    \exdentamount = \lispnarrowing
    \exdentamount = \lispnarrowing
    \let\nonarrowing = \relax
    \let\nonarrowing = \relax
  \fi
  \fi
}
}
 
 
 
 
\message{defuns,}
\message{defuns,}
% Define formatter for defuns
% Define formatter for defuns
% First, allow user to change definition object font (\df) internally
% First, allow user to change definition object font (\df) internally
\def\setdeffont #1 {\csname DEF#1\endcsname}
\def\setdeffont #1 {\csname DEF#1\endcsname}
 
 
\newskip\defbodyindent \defbodyindent=.4in
\newskip\defbodyindent \defbodyindent=.4in
\newskip\defargsindent \defargsindent=50pt
\newskip\defargsindent \defargsindent=50pt
\newskip\deftypemargin \deftypemargin=12pt
\newskip\deftypemargin \deftypemargin=12pt
\newskip\deflastargmargin \deflastargmargin=18pt
\newskip\deflastargmargin \deflastargmargin=18pt
 
 
\newcount\parencount
\newcount\parencount
% define \functionparens, which makes ( and ) and & do special things.
% define \functionparens, which makes ( and ) and & do special things.
% \functionparens affects the group it is contained in.
% \functionparens affects the group it is contained in.
\def\activeparens{%
\def\activeparens{%
\catcode`\(=\active \catcode`\)=\active \catcode`\&=\active
\catcode`\(=\active \catcode`\)=\active \catcode`\&=\active
\catcode`\[=\active \catcode`\]=\active}
\catcode`\[=\active \catcode`\]=\active}
 
 
% Make control sequences which act like normal parenthesis chars.
% Make control sequences which act like normal parenthesis chars.
\let\lparen = ( \let\rparen = )
\let\lparen = ( \let\rparen = )
 
 
{\activeparens % Now, smart parens don't turn on until &foo (see \amprm)
{\activeparens % Now, smart parens don't turn on until &foo (see \amprm)
 
 
% Be sure that we always have a definition for `(', etc.  For example,
% Be sure that we always have a definition for `(', etc.  For example,
% if the fn name has parens in it, \boldbrax will not be in effect yet,
% if the fn name has parens in it, \boldbrax will not be in effect yet,
% so TeX would otherwise complain about undefined control sequence.
% so TeX would otherwise complain about undefined control sequence.
\global\let(=\lparen \global\let)=\rparen
\global\let(=\lparen \global\let)=\rparen
\global\let[=\lbrack \global\let]=\rbrack
\global\let[=\lbrack \global\let]=\rbrack
 
 
\gdef\functionparens{\boldbrax\let&=\amprm\parencount=0 }
\gdef\functionparens{\boldbrax\let&=\amprm\parencount=0 }
\gdef\boldbrax{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb}
\gdef\boldbrax{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb}
% This is used to turn on special parens
% This is used to turn on special parens
% but make & act ordinary (given that it's active).
% but make & act ordinary (given that it's active).
\gdef\boldbraxnoamp{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb\let&=\ampnr}
\gdef\boldbraxnoamp{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb\let&=\ampnr}
 
 
% Definitions of (, ) and & used in args for functions.
% Definitions of (, ) and & used in args for functions.
% This is the definition of ( outside of all parentheses.
% This is the definition of ( outside of all parentheses.
\gdef\oprm#1 {{\rm\char`\(}#1 \bf \let(=\opnested
\gdef\oprm#1 {{\rm\char`\(}#1 \bf \let(=\opnested
  \global\advance\parencount by 1
  \global\advance\parencount by 1
}
}
%
%
% This is the definition of ( when already inside a level of parens.
% This is the definition of ( when already inside a level of parens.
\gdef\opnested{\char`\(\global\advance\parencount by 1 }
\gdef\opnested{\char`\(\global\advance\parencount by 1 }
%
%
\gdef\clrm{% Print a paren in roman if it is taking us back to depth of 0.
\gdef\clrm{% Print a paren in roman if it is taking us back to depth of 0.
  % also in that case restore the outer-level definition of (.
  % also in that case restore the outer-level definition of (.
  \ifnum \parencount=1 {\rm \char `\)}\sl \let(=\oprm \else \char `\) \fi
  \ifnum \parencount=1 {\rm \char `\)}\sl \let(=\oprm \else \char `\) \fi
  \global\advance \parencount by -1 }
  \global\advance \parencount by -1 }
% If we encounter &foo, then turn on ()-hacking afterwards
% If we encounter &foo, then turn on ()-hacking afterwards
\gdef\amprm#1 {{\rm\&#1}\let(=\oprm \let)=\clrm\ }
\gdef\amprm#1 {{\rm\&#1}\let(=\oprm \let)=\clrm\ }
%
%
\gdef\normalparens{\boldbrax\let&=\ampnr}
\gdef\normalparens{\boldbrax\let&=\ampnr}
} % End of definition inside \activeparens
} % End of definition inside \activeparens
%% These parens (in \boldbrax) actually are a little bolder than the
%% These parens (in \boldbrax) actually are a little bolder than the
%% contained text.  This is especially needed for [ and ]
%% contained text.  This is especially needed for [ and ]
\def\opnr{{\sf\char`\(}\global\advance\parencount by 1 }
\def\opnr{{\sf\char`\(}\global\advance\parencount by 1 }
\def\clnr{{\sf\char`\)}\global\advance\parencount by -1 }
\def\clnr{{\sf\char`\)}\global\advance\parencount by -1 }
\def\ampnr{\&}
\def\ampnr{\&}
\def\lbrb{{\bf\char`\[}}
\def\lbrb{{\bf\char`\[}}
\def\rbrb{{\bf\char`\]}}
\def\rbrb{{\bf\char`\]}}
 
 
% First, defname, which formats the header line itself.
% First, defname, which formats the header line itself.
% #1 should be the function name.
% #1 should be the function name.
% #2 should be the type of definition, such as "Function".
% #2 should be the type of definition, such as "Function".
 
 
\def\defname #1#2{%
\def\defname #1#2{%
% Get the values of \leftskip and \rightskip as they were
% Get the values of \leftskip and \rightskip as they were
% outside the @def...
% outside the @def...
\dimen2=\leftskip
\dimen2=\leftskip
\advance\dimen2 by -\defbodyindent
\advance\dimen2 by -\defbodyindent
\noindent
\noindent
\setbox0=\hbox{\hskip \deflastargmargin{\rm #2}\hskip \deftypemargin}%
\setbox0=\hbox{\hskip \deflastargmargin{\rm #2}\hskip \deftypemargin}%
\dimen0=\hsize \advance \dimen0 by -\wd0 % compute size for first line
\dimen0=\hsize \advance \dimen0 by -\wd0 % compute size for first line
\dimen1=\hsize \advance \dimen1 by -\defargsindent %size for continuations
\dimen1=\hsize \advance \dimen1 by -\defargsindent %size for continuations
\parshape 2 0in \dimen0 \defargsindent \dimen1
\parshape 2 0in \dimen0 \defargsindent \dimen1
% Now output arg 2 ("Function" or some such)
% Now output arg 2 ("Function" or some such)
% ending at \deftypemargin from the right margin,
% ending at \deftypemargin from the right margin,
% but stuck inside a box of width 0 so it does not interfere with linebreaking
% but stuck inside a box of width 0 so it does not interfere with linebreaking
{% Adjust \hsize to exclude the ambient margins,
{% Adjust \hsize to exclude the ambient margins,
% so that \rightline will obey them.
% so that \rightline will obey them.
\advance \hsize by -\dimen2
\advance \hsize by -\dimen2
\rlap{\rightline{{\rm #2}\hskip -1.25pc }}}%
\rlap{\rightline{{\rm #2}\hskip -1.25pc }}}%
% Make all lines underfull and no complaints:
% Make all lines underfull and no complaints:
\tolerance=10000 \hbadness=10000
\tolerance=10000 \hbadness=10000
\advance\leftskip by -\defbodyindent
\advance\leftskip by -\defbodyindent
\exdentamount=\defbodyindent
\exdentamount=\defbodyindent
{\df #1}\enskip        % Generate function name
{\df #1}\enskip        % Generate function name
}
}
 
 
% Actually process the body of a definition
% Actually process the body of a definition
% #1 should be the terminating control sequence, such as \Edefun.
% #1 should be the terminating control sequence, such as \Edefun.
% #2 should be the "another name" control sequence, such as \defunx.
% #2 should be the "another name" control sequence, such as \defunx.
% #3 should be the control sequence that actually processes the header,
% #3 should be the control sequence that actually processes the header,
%    such as \defunheader.
%    such as \defunheader.
 
 
\def\defparsebody #1#2#3{\begingroup\inENV% Environment for definitionbody
\def\defparsebody #1#2#3{\begingroup\inENV% Environment for definitionbody
\medbreak %
\medbreak %
% Define the end token that this defining construct specifies
% Define the end token that this defining construct specifies
% so that it will exit this group.
% so that it will exit this group.
\def#1{\endgraf\endgroup\medbreak}%
\def#1{\endgraf\endgroup\medbreak}%
\def#2{\begingroup\obeylines\activeparens\spacesplit#3}%
\def#2{\begingroup\obeylines\activeparens\spacesplit#3}%
\parindent=0in
\parindent=0in
\advance\leftskip by \defbodyindent
\advance\leftskip by \defbodyindent
\exdentamount=\defbodyindent
\exdentamount=\defbodyindent
\begingroup %
\begingroup %
\catcode 61=\active % 61 is `='
\catcode 61=\active % 61 is `='
\obeylines\activeparens\spacesplit#3}
\obeylines\activeparens\spacesplit#3}
 
 
% #1 is the \E... control sequence to end the definition (which we define).
% #1 is the \E... control sequence to end the definition (which we define).
% #2 is the \...x control sequence for consecutive fns (which we define).
% #2 is the \...x control sequence for consecutive fns (which we define).
% #3 is the control sequence to call to resume processing.
% #3 is the control sequence to call to resume processing.
% #4, delimited by the space, is the class name.
% #4, delimited by the space, is the class name.
%
%
\def\defmethparsebody#1#2#3#4 {\begingroup\inENV %
\def\defmethparsebody#1#2#3#4 {\begingroup\inENV %
\medbreak %
\medbreak %
% Define the end token that this defining construct specifies
% Define the end token that this defining construct specifies
% so that it will exit this group.
% so that it will exit this group.
\def#1{\endgraf\endgroup\medbreak}%
\def#1{\endgraf\endgroup\medbreak}%
\def#2##1 {\begingroup\obeylines\activeparens\spacesplit{#3{##1}}}%
\def#2##1 {\begingroup\obeylines\activeparens\spacesplit{#3{##1}}}%
\parindent=0in
\parindent=0in
\advance\leftskip by \defbodyindent
\advance\leftskip by \defbodyindent
\exdentamount=\defbodyindent
\exdentamount=\defbodyindent
\begingroup\obeylines\activeparens\spacesplit{#3{#4}}}
\begingroup\obeylines\activeparens\spacesplit{#3{#4}}}
 
 
% @deftypemethod has an extra argument that nothing else does.  Sigh.
% @deftypemethod has an extra argument that nothing else does.  Sigh.
% #1 is the \E... control sequence to end the definition (which we define).
% #1 is the \E... control sequence to end the definition (which we define).
% #2 is the \...x control sequence for consecutive fns (which we define).
% #2 is the \...x control sequence for consecutive fns (which we define).
% #3 is the control sequence to call to resume processing.
% #3 is the control sequence to call to resume processing.
% #4, delimited by the space, is the class name.
% #4, delimited by the space, is the class name.
% #5 is the method's return type.
% #5 is the method's return type.
%
%
\def\deftypemethparsebody#1#2#3#4 #5 {\begingroup\inENV %
\def\deftypemethparsebody#1#2#3#4 #5 {\begingroup\inENV %
\medbreak %
\medbreak %
% Define the end token that this defining construct specifies
% Define the end token that this defining construct specifies
% so that it will exit this group.
% so that it will exit this group.
\def#1{\endgraf\endgroup\medbreak}%
\def#1{\endgraf\endgroup\medbreak}%
\def#2##1 ##2 {\begingroup\obeylines\activeparens\spacesplit{#3{##1}{##2}}}%
\def#2##1 ##2 {\begingroup\obeylines\activeparens\spacesplit{#3{##1}{##2}}}%
\parindent=0in
\parindent=0in
\advance\leftskip by \defbodyindent
\advance\leftskip by \defbodyindent
\exdentamount=\defbodyindent
\exdentamount=\defbodyindent
\begingroup\obeylines\activeparens\spacesplit{#3{#4}{#5}}}
\begingroup\obeylines\activeparens\spacesplit{#3{#4}{#5}}}
 
 
\def\defopparsebody #1#2#3#4#5 {\begingroup\inENV %
\def\defopparsebody #1#2#3#4#5 {\begingroup\inENV %
\medbreak %
\medbreak %
% Define the end token that this defining construct specifies
% Define the end token that this defining construct specifies
% so that it will exit this group.
% so that it will exit this group.
\def#1{\endgraf\endgroup\medbreak}%
\def#1{\endgraf\endgroup\medbreak}%
\def#2##1 ##2 {\def#4{##1}%
\def#2##1 ##2 {\def#4{##1}%
\begingroup\obeylines\activeparens\spacesplit{#3{##2}}}%
\begingroup\obeylines\activeparens\spacesplit{#3{##2}}}%
\parindent=0in
\parindent=0in
\advance\leftskip by \defbodyindent
\advance\leftskip by \defbodyindent
\exdentamount=\defbodyindent
\exdentamount=\defbodyindent
\begingroup\obeylines\activeparens\spacesplit{#3{#5}}}
\begingroup\obeylines\activeparens\spacesplit{#3{#5}}}
 
 
% These parsing functions are similar to the preceding ones
% These parsing functions are similar to the preceding ones
% except that they do not make parens into active characters.
% except that they do not make parens into active characters.
% These are used for "variables" since they have no arguments.
% These are used for "variables" since they have no arguments.
 
 
\def\defvarparsebody #1#2#3{\begingroup\inENV% Environment for definitionbody
\def\defvarparsebody #1#2#3{\begingroup\inENV% Environment for definitionbody
\medbreak %
\medbreak %
% Define the end token that this defining construct specifies
% Define the end token that this defining construct specifies
% so that it will exit this group.
% so that it will exit this group.
\def#1{\endgraf\endgroup\medbreak}%
\def#1{\endgraf\endgroup\medbreak}%
\def#2{\begingroup\obeylines\spacesplit#3}%
\def#2{\begingroup\obeylines\spacesplit#3}%
\parindent=0in
\parindent=0in
\advance\leftskip by \defbodyindent
\advance\leftskip by \defbodyindent
\exdentamount=\defbodyindent
\exdentamount=\defbodyindent
\begingroup %
\begingroup %
\catcode 61=\active %
\catcode 61=\active %
\obeylines\spacesplit#3}
\obeylines\spacesplit#3}
 
 
% This is used for \def{tp,vr}parsebody.  It could probably be used for
% This is used for \def{tp,vr}parsebody.  It could probably be used for
% some of the others, too, with some judicious conditionals.
% some of the others, too, with some judicious conditionals.
%
%
\def\parsebodycommon#1#2#3{%
\def\parsebodycommon#1#2#3{%
  \begingroup\inENV %
  \begingroup\inENV %
  \medbreak %
  \medbreak %
  % Define the end token that this defining construct specifies
  % Define the end token that this defining construct specifies
  % so that it will exit this group.
  % so that it will exit this group.
  \def#1{\endgraf\endgroup\medbreak}%
  \def#1{\endgraf\endgroup\medbreak}%
  \def#2##1 {\begingroup\obeylines\spacesplit{#3{##1}}}%
  \def#2##1 {\begingroup\obeylines\spacesplit{#3{##1}}}%
  \parindent=0in
  \parindent=0in
  \advance\leftskip by \defbodyindent
  \advance\leftskip by \defbodyindent
  \exdentamount=\defbodyindent
  \exdentamount=\defbodyindent
  \begingroup\obeylines
  \begingroup\obeylines
}
}
 
 
\def\defvrparsebody#1#2#3#4 {%
\def\defvrparsebody#1#2#3#4 {%
  \parsebodycommon{#1}{#2}{#3}%
  \parsebodycommon{#1}{#2}{#3}%
  \spacesplit{#3{#4}}%
  \spacesplit{#3{#4}}%
}
}
 
 
% This loses on `@deftp {Data Type} {struct termios}' -- it thinks the
% This loses on `@deftp {Data Type} {struct termios}' -- it thinks the
% type is just `struct', because we lose the braces in `{struct
% type is just `struct', because we lose the braces in `{struct
% termios}' when \spacesplit reads its undelimited argument.  Sigh.
% termios}' when \spacesplit reads its undelimited argument.  Sigh.
% \let\deftpparsebody=\defvrparsebody
% \let\deftpparsebody=\defvrparsebody
%
%
% So, to get around this, we put \empty in with the type name.  That
% So, to get around this, we put \empty in with the type name.  That
% way, TeX won't find exactly `{...}' as an undelimited argument, and
% way, TeX won't find exactly `{...}' as an undelimited argument, and
% won't strip off the braces.
% won't strip off the braces.
%
%
\def\deftpparsebody #1#2#3#4 {%
\def\deftpparsebody #1#2#3#4 {%
  \parsebodycommon{#1}{#2}{#3}%
  \parsebodycommon{#1}{#2}{#3}%
  \spacesplit{\parsetpheaderline{#3{#4}}}\empty
  \spacesplit{\parsetpheaderline{#3{#4}}}\empty
}
}
 
 
% Fine, but then we have to eventually remove the \empty *and* the
% Fine, but then we have to eventually remove the \empty *and* the
% braces (if any).  That's what this does.
% braces (if any).  That's what this does.
%
%
\def\removeemptybraces\empty#1\relax{#1}
\def\removeemptybraces\empty#1\relax{#1}
 
 
% After \spacesplit has done its work, this is called -- #1 is the final
% After \spacesplit has done its work, this is called -- #1 is the final
% thing to call, #2 the type name (which starts with \empty), and #3
% thing to call, #2 the type name (which starts with \empty), and #3
% (which might be empty) the arguments.
% (which might be empty) the arguments.
%
%
\def\parsetpheaderline#1#2#3{%
\def\parsetpheaderline#1#2#3{%
  #1{\removeemptybraces#2\relax}{#3}%
  #1{\removeemptybraces#2\relax}{#3}%
}%
}%
 
 
\def\defopvarparsebody #1#2#3#4#5 {\begingroup\inENV %
\def\defopvarparsebody #1#2#3#4#5 {\begingroup\inENV %
\medbreak %
\medbreak %
% Define the end token that this defining construct specifies
% Define the end token that this defining construct specifies
% so that it will exit this group.
% so that it will exit this group.
\def#1{\endgraf\endgroup\medbreak}%
\def#1{\endgraf\endgroup\medbreak}%
\def#2##1 ##2 {\def#4{##1}%
\def#2##1 ##2 {\def#4{##1}%
\begingroup\obeylines\spacesplit{#3{##2}}}%
\begingroup\obeylines\spacesplit{#3{##2}}}%
\parindent=0in
\parindent=0in
\advance\leftskip by \defbodyindent
\advance\leftskip by \defbodyindent
\exdentamount=\defbodyindent
\exdentamount=\defbodyindent
\begingroup\obeylines\spacesplit{#3{#5}}}
\begingroup\obeylines\spacesplit{#3{#5}}}
 
 
% Split up #2 at the first space token.
% Split up #2 at the first space token.
% call #1 with two arguments:
% call #1 with two arguments:
%  the first is all of #2 before the space token,
%  the first is all of #2 before the space token,
%  the second is all of #2 after that space token.
%  the second is all of #2 after that space token.
% If #2 contains no space token, all of it is passed as the first arg
% If #2 contains no space token, all of it is passed as the first arg
% and the second is passed as empty.
% and the second is passed as empty.
 
 
{\obeylines
{\obeylines
\gdef\spacesplit#1#2^^M{\endgroup\spacesplitfoo{#1}#2 \relax\spacesplitfoo}%
\gdef\spacesplit#1#2^^M{\endgroup\spacesplitfoo{#1}#2 \relax\spacesplitfoo}%
\long\gdef\spacesplitfoo#1#2 #3#4\spacesplitfoo{%
\long\gdef\spacesplitfoo#1#2 #3#4\spacesplitfoo{%
\ifx\relax #3%
\ifx\relax #3%
#1{#2}{}\else #1{#2}{#3#4}\fi}}
#1{#2}{}\else #1{#2}{#3#4}\fi}}
 
 
% So much for the things common to all kinds of definitions.
% So much for the things common to all kinds of definitions.
 
 
% Define @defun.
% Define @defun.
 
 
% First, define the processing that is wanted for arguments of \defun
% First, define the processing that is wanted for arguments of \defun
% Use this to expand the args and terminate the paragraph they make up
% Use this to expand the args and terminate the paragraph they make up
 
 
\def\defunargs #1{\functionparens \sl
\def\defunargs #1{\functionparens \sl
% Expand, preventing hyphenation at `-' chars.
% Expand, preventing hyphenation at `-' chars.
% Note that groups don't affect changes in \hyphenchar.
% Note that groups don't affect changes in \hyphenchar.
\hyphenchar\tensl=0
\hyphenchar\tensl=0
#1%
#1%
\hyphenchar\tensl=45
\hyphenchar\tensl=45
\ifnum\parencount=0 \else \errmessage{Unbalanced parentheses in @def}\fi%
\ifnum\parencount=0 \else \errmessage{Unbalanced parentheses in @def}\fi%
\interlinepenalty=10000
\interlinepenalty=10000
\advance\rightskip by 0pt plus 1fil
\advance\rightskip by 0pt plus 1fil
\endgraf\nobreak\vskip -\parskip\nobreak
\endgraf\nobreak\vskip -\parskip\nobreak
}
}
 
 
\def\deftypefunargs #1{%
\def\deftypefunargs #1{%
% Expand, preventing hyphenation at `-' chars.
% Expand, preventing hyphenation at `-' chars.
% Note that groups don't affect changes in \hyphenchar.
% Note that groups don't affect changes in \hyphenchar.
% Use \boldbraxnoamp, not \functionparens, so that & is not special.
% Use \boldbraxnoamp, not \functionparens, so that & is not special.
\boldbraxnoamp
\boldbraxnoamp
\tclose{#1}% avoid \code because of side effects on active chars
\tclose{#1}% avoid \code because of side effects on active chars
\interlinepenalty=10000
\interlinepenalty=10000
\advance\rightskip by 0pt plus 1fil
\advance\rightskip by 0pt plus 1fil
\endgraf\nobreak\vskip -\parskip\nobreak
\endgraf\nobreak\vskip -\parskip\nobreak
}
}
 
 
% Do complete processing of one @defun or @defunx line already parsed.
% Do complete processing of one @defun or @defunx line already parsed.
 
 
% @deffn Command forward-char nchars
% @deffn Command forward-char nchars
 
 
\def\deffn{\defmethparsebody\Edeffn\deffnx\deffnheader}
\def\deffn{\defmethparsebody\Edeffn\deffnx\deffnheader}
 
 
\def\deffnheader #1#2#3{\doind {fn}{\code{#2}}%
\def\deffnheader #1#2#3{\doind {fn}{\code{#2}}%
\begingroup\defname {#2}{#1}\defunargs{#3}\endgroup %
\begingroup\defname {#2}{#1}\defunargs{#3}\endgroup %
\catcode 61=\other % Turn off change made in \defparsebody
\catcode 61=\other % Turn off change made in \defparsebody
}
}
 
 
% @defun == @deffn Function
% @defun == @deffn Function
 
 
\def\defun{\defparsebody\Edefun\defunx\defunheader}
\def\defun{\defparsebody\Edefun\defunx\defunheader}
 
 
\def\defunheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
\def\defunheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
\begingroup\defname {#1}{Function}%
\begingroup\defname {#1}{Function}%
\defunargs {#2}\endgroup %
\defunargs {#2}\endgroup %
\catcode 61=\other % Turn off change made in \defparsebody
\catcode 61=\other % Turn off change made in \defparsebody
}
}
 
 
% @deftypefun int foobar (int @var{foo}, float @var{bar})
% @deftypefun int foobar (int @var{foo}, float @var{bar})
 
 
\def\deftypefun{\defparsebody\Edeftypefun\deftypefunx\deftypefunheader}
\def\deftypefun{\defparsebody\Edeftypefun\deftypefunx\deftypefunheader}
 
 
% #1 is the data type.  #2 is the name and args.
% #1 is the data type.  #2 is the name and args.
\def\deftypefunheader #1#2{\deftypefunheaderx{#1}#2 \relax}
\def\deftypefunheader #1#2{\deftypefunheaderx{#1}#2 \relax}
% #1 is the data type, #2 the name, #3 the args.
% #1 is the data type, #2 the name, #3 the args.
\def\deftypefunheaderx #1#2 #3\relax{%
\def\deftypefunheaderx #1#2 #3\relax{%
\doind {fn}{\code{#2}}% Make entry in function index
\doind {fn}{\code{#2}}% Make entry in function index
\begingroup\defname {\defheaderxcond#1\relax$$$#2}{Function}%
\begingroup\defname {\defheaderxcond#1\relax$$$#2}{Function}%
\deftypefunargs {#3}\endgroup %
\deftypefunargs {#3}\endgroup %
\catcode 61=\other % Turn off change made in \defparsebody
\catcode 61=\other % Turn off change made in \defparsebody
}
}
 
 
% @deftypefn {Library Function} int foobar (int @var{foo}, float @var{bar})
% @deftypefn {Library Function} int foobar (int @var{foo}, float @var{bar})
 
 
\def\deftypefn{\defmethparsebody\Edeftypefn\deftypefnx\deftypefnheader}
\def\deftypefn{\defmethparsebody\Edeftypefn\deftypefnx\deftypefnheader}
 
 
% \defheaderxcond#1\relax$$$
% \defheaderxcond#1\relax$$$
% puts #1 in @code, followed by a space, but does nothing if #1 is null.
% puts #1 in @code, followed by a space, but does nothing if #1 is null.
\def\defheaderxcond#1#2$$${\ifx#1\relax\else\code{#1#2} \fi}
\def\defheaderxcond#1#2$$${\ifx#1\relax\else\code{#1#2} \fi}
 
 
% #1 is the classification.  #2 is the data type.  #3 is the name and args.
% #1 is the classification.  #2 is the data type.  #3 is the name and args.
\def\deftypefnheader #1#2#3{\deftypefnheaderx{#1}{#2}#3 \relax}
\def\deftypefnheader #1#2#3{\deftypefnheaderx{#1}{#2}#3 \relax}
% #1 is the classification, #2 the data type, #3 the name, #4 the args.
% #1 is the classification, #2 the data type, #3 the name, #4 the args.
\def\deftypefnheaderx #1#2#3 #4\relax{%
\def\deftypefnheaderx #1#2#3 #4\relax{%
\doind {fn}{\code{#3}}% Make entry in function index
\doind {fn}{\code{#3}}% Make entry in function index
\begingroup
\begingroup
\normalparens % notably, turn off `&' magic, which prevents
\normalparens % notably, turn off `&' magic, which prevents
%               at least some C++ text from working
%               at least some C++ text from working
\defname {\defheaderxcond#2\relax$$$#3}{#1}%
\defname {\defheaderxcond#2\relax$$$#3}{#1}%
\deftypefunargs {#4}\endgroup %
\deftypefunargs {#4}\endgroup %
\catcode 61=\other % Turn off change made in \defparsebody
\catcode 61=\other % Turn off change made in \defparsebody
}
}
 
 
% @defmac == @deffn Macro
% @defmac == @deffn Macro
 
 
\def\defmac{\defparsebody\Edefmac\defmacx\defmacheader}
\def\defmac{\defparsebody\Edefmac\defmacx\defmacheader}
 
 
\def\defmacheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
\def\defmacheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
\begingroup\defname {#1}{Macro}%
\begingroup\defname {#1}{Macro}%
\defunargs {#2}\endgroup %
\defunargs {#2}\endgroup %
\catcode 61=\other % Turn off change made in \defparsebody
\catcode 61=\other % Turn off change made in \defparsebody
}
}
 
 
% @defspec == @deffn Special Form
% @defspec == @deffn Special Form
 
 
\def\defspec{\defparsebody\Edefspec\defspecx\defspecheader}
\def\defspec{\defparsebody\Edefspec\defspecx\defspecheader}
 
 
\def\defspecheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
\def\defspecheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
\begingroup\defname {#1}{Special Form}%
\begingroup\defname {#1}{Special Form}%
\defunargs {#2}\endgroup %
\defunargs {#2}\endgroup %
\catcode 61=\other % Turn off change made in \defparsebody
\catcode 61=\other % Turn off change made in \defparsebody
}
}
 
 
% This definition is run if you use @defunx
% This definition is run if you use @defunx
% anywhere other than immediately after a @defun or @defunx.
% anywhere other than immediately after a @defun or @defunx.
 
 
\def\deffnx #1 {\errmessage{@deffnx in invalid context}}
\def\deffnx #1 {\errmessage{@deffnx in invalid context}}
\def\defunx #1 {\errmessage{@defunx in invalid context}}
\def\defunx #1 {\errmessage{@defunx in invalid context}}
\def\defmacx #1 {\errmessage{@defmacx in invalid context}}
\def\defmacx #1 {\errmessage{@defmacx in invalid context}}
\def\defspecx #1 {\errmessage{@defspecx in invalid context}}
\def\defspecx #1 {\errmessage{@defspecx in invalid context}}
\def\deftypefnx #1 {\errmessage{@deftypefnx in invalid context}}
\def\deftypefnx #1 {\errmessage{@deftypefnx in invalid context}}
\def\deftypemethodx #1 {\errmessage{@deftypemethodx in invalid context}}
\def\deftypemethodx #1 {\errmessage{@deftypemethodx in invalid context}}
\def\deftypefunx #1 {\errmessage{@deftypefunx in invalid context}}
\def\deftypefunx #1 {\errmessage{@deftypefunx in invalid context}}
 
 
% @defmethod, and so on
% @defmethod, and so on
 
 
% @defop CATEGORY CLASS OPERATION ARG...
% @defop CATEGORY CLASS OPERATION ARG...
 
 
\def\defop #1 {\def\defoptype{#1}%
\def\defop #1 {\def\defoptype{#1}%
\defopparsebody\Edefop\defopx\defopheader\defoptype}
\defopparsebody\Edefop\defopx\defopheader\defoptype}
 
 
\def\defopheader #1#2#3{%
\def\defopheader #1#2#3{%
\dosubind {fn}{\code{#2}}{\putwordon\ #1}% Make entry in function index
\dosubind {fn}{\code{#2}}{\putwordon\ #1}% Make entry in function index
\begingroup\defname {#2}{\defoptype{} on #1}%
\begingroup\defname {#2}{\defoptype{} on #1}%
\defunargs {#3}\endgroup %
\defunargs {#3}\endgroup %
}
}
 
 
% @deftypemethod CLASS RETURN-TYPE METHOD ARG...
% @deftypemethod CLASS RETURN-TYPE METHOD ARG...
%
%
\def\deftypemethod{%
\def\deftypemethod{%
  \deftypemethparsebody\Edeftypemethod\deftypemethodx\deftypemethodheader}
  \deftypemethparsebody\Edeftypemethod\deftypemethodx\deftypemethodheader}
%
%
% #1 is the class name, #2 the data type, #3 the method name, #4 the args.
% #1 is the class name, #2 the data type, #3 the method name, #4 the args.
\def\deftypemethodheader#1#2#3#4{%
\def\deftypemethodheader#1#2#3#4{%
  \dosubind{fn}{\code{#3}}{\putwordon\ \code{#1}}% entry in function index
  \dosubind{fn}{\code{#3}}{\putwordon\ \code{#1}}% entry in function index
  \begingroup
  \begingroup
    \defname{\defheaderxcond#2\relax$$$#3}{\putwordMethodon\ \code{#1}}%
    \defname{\defheaderxcond#2\relax$$$#3}{\putwordMethodon\ \code{#1}}%
    \deftypefunargs{#4}%
    \deftypefunargs{#4}%
  \endgroup
  \endgroup
}
}
 
 
% @defmethod == @defop Method
% @defmethod == @defop Method
%
%
\def\defmethod{\defmethparsebody\Edefmethod\defmethodx\defmethodheader}
\def\defmethod{\defmethparsebody\Edefmethod\defmethodx\defmethodheader}
%
%
% #1 is the class name, #2 the method name, #3 the args.
% #1 is the class name, #2 the method name, #3 the args.
\def\defmethodheader#1#2#3{%
\def\defmethodheader#1#2#3{%
  \dosubind{fn}{\code{#2}}{\putwordon\ \code{#1}}% entry in function index
  \dosubind{fn}{\code{#2}}{\putwordon\ \code{#1}}% entry in function index
  \begingroup
  \begingroup
    \defname{#2}{\putwordMethodon\ \code{#1}}%
    \defname{#2}{\putwordMethodon\ \code{#1}}%
    \defunargs{#3}%
    \defunargs{#3}%
  \endgroup
  \endgroup
}
}
 
 
% @defcv {Class Option} foo-class foo-flag
% @defcv {Class Option} foo-class foo-flag
 
 
\def\defcv #1 {\def\defcvtype{#1}%
\def\defcv #1 {\def\defcvtype{#1}%
\defopvarparsebody\Edefcv\defcvx\defcvarheader\defcvtype}
\defopvarparsebody\Edefcv\defcvx\defcvarheader\defcvtype}
 
 
\def\defcvarheader #1#2#3{%
\def\defcvarheader #1#2#3{%
\dosubind {vr}{\code{#2}}{of #1}% Make entry in var index
\dosubind {vr}{\code{#2}}{of #1}% Make entry in var index
\begingroup\defname {#2}{\defcvtype{} of #1}%
\begingroup\defname {#2}{\defcvtype{} of #1}%
\defvarargs {#3}\endgroup %
\defvarargs {#3}\endgroup %
}
}
 
 
% @defivar == @defcv {Instance Variable}
% @defivar == @defcv {Instance Variable}
 
 
\def\defivar{\defvrparsebody\Edefivar\defivarx\defivarheader}
\def\defivar{\defvrparsebody\Edefivar\defivarx\defivarheader}
 
 
\def\defivarheader #1#2#3{%
\def\defivarheader #1#2#3{%
\dosubind {vr}{\code{#2}}{of #1}% Make entry in var index
\dosubind {vr}{\code{#2}}{of #1}% Make entry in var index
\begingroup\defname {#2}{Instance Variable of #1}%
\begingroup\defname {#2}{Instance Variable of #1}%
\defvarargs {#3}\endgroup %
\defvarargs {#3}\endgroup %
}
}
 
 
% These definitions are run if you use @defmethodx, etc.,
% These definitions are run if you use @defmethodx, etc.,
% anywhere other than immediately after a @defmethod, etc.
% anywhere other than immediately after a @defmethod, etc.
 
 
\def\defopx #1 {\errmessage{@defopx in invalid context}}
\def\defopx #1 {\errmessage{@defopx in invalid context}}
\def\defmethodx #1 {\errmessage{@defmethodx in invalid context}}
\def\defmethodx #1 {\errmessage{@defmethodx in invalid context}}
\def\defcvx #1 {\errmessage{@defcvx in invalid context}}
\def\defcvx #1 {\errmessage{@defcvx in invalid context}}
\def\defivarx #1 {\errmessage{@defivarx in invalid context}}
\def\defivarx #1 {\errmessage{@defivarx in invalid context}}
 
 
% Now @defvar
% Now @defvar
 
 
% First, define the processing that is wanted for arguments of @defvar.
% First, define the processing that is wanted for arguments of @defvar.
% This is actually simple: just print them in roman.
% This is actually simple: just print them in roman.
% This must expand the args and terminate the paragraph they make up
% This must expand the args and terminate the paragraph they make up
\def\defvarargs #1{\normalparens #1%
\def\defvarargs #1{\normalparens #1%
\interlinepenalty=10000
\interlinepenalty=10000
\endgraf\nobreak\vskip -\parskip\nobreak}
\endgraf\nobreak\vskip -\parskip\nobreak}
 
 
% @defvr Counter foo-count
% @defvr Counter foo-count
 
 
\def\defvr{\defvrparsebody\Edefvr\defvrx\defvrheader}
\def\defvr{\defvrparsebody\Edefvr\defvrx\defvrheader}
 
 
\def\defvrheader #1#2#3{\doind {vr}{\code{#2}}%
\def\defvrheader #1#2#3{\doind {vr}{\code{#2}}%
\begingroup\defname {#2}{#1}\defvarargs{#3}\endgroup}
\begingroup\defname {#2}{#1}\defvarargs{#3}\endgroup}
 
 
% @defvar == @defvr Variable
% @defvar == @defvr Variable
 
 
\def\defvar{\defvarparsebody\Edefvar\defvarx\defvarheader}
\def\defvar{\defvarparsebody\Edefvar\defvarx\defvarheader}
 
 
\def\defvarheader #1#2{\doind {vr}{\code{#1}}% Make entry in var index
\def\defvarheader #1#2{\doind {vr}{\code{#1}}% Make entry in var index
\begingroup\defname {#1}{Variable}%
\begingroup\defname {#1}{Variable}%
\defvarargs {#2}\endgroup %
\defvarargs {#2}\endgroup %
}
}
 
 
% @defopt == @defvr {User Option}
% @defopt == @defvr {User Option}
 
 
\def\defopt{\defvarparsebody\Edefopt\defoptx\defoptheader}
\def\defopt{\defvarparsebody\Edefopt\defoptx\defoptheader}
 
 
\def\defoptheader #1#2{\doind {vr}{\code{#1}}% Make entry in var index
\def\defoptheader #1#2{\doind {vr}{\code{#1}}% Make entry in var index
\begingroup\defname {#1}{User Option}%
\begingroup\defname {#1}{User Option}%
\defvarargs {#2}\endgroup %
\defvarargs {#2}\endgroup %
}
}
 
 
% @deftypevar int foobar
% @deftypevar int foobar
 
 
\def\deftypevar{\defvarparsebody\Edeftypevar\deftypevarx\deftypevarheader}
\def\deftypevar{\defvarparsebody\Edeftypevar\deftypevarx\deftypevarheader}
 
 
% #1 is the data type.  #2 is the name, perhaps followed by text that
% #1 is the data type.  #2 is the name, perhaps followed by text that
% is actually part of the data type, which should not be put into the index.
% is actually part of the data type, which should not be put into the index.
\def\deftypevarheader #1#2{%
\def\deftypevarheader #1#2{%
\dovarind#2 \relax% Make entry in variables index
\dovarind#2 \relax% Make entry in variables index
\begingroup\defname {\defheaderxcond#1\relax$$$#2}{Variable}%
\begingroup\defname {\defheaderxcond#1\relax$$$#2}{Variable}%
\interlinepenalty=10000
\interlinepenalty=10000
\endgraf\nobreak\vskip -\parskip\nobreak
\endgraf\nobreak\vskip -\parskip\nobreak
\endgroup}
\endgroup}
\def\dovarind#1 #2\relax{\doind{vr}{\code{#1}}}
\def\dovarind#1 #2\relax{\doind{vr}{\code{#1}}}
 
 
% @deftypevr {Global Flag} int enable
% @deftypevr {Global Flag} int enable
 
 
\def\deftypevr{\defvrparsebody\Edeftypevr\deftypevrx\deftypevrheader}
\def\deftypevr{\defvrparsebody\Edeftypevr\deftypevrx\deftypevrheader}
 
 
\def\deftypevrheader #1#2#3{\dovarind#3 \relax%
\def\deftypevrheader #1#2#3{\dovarind#3 \relax%
\begingroup\defname {\defheaderxcond#2\relax$$$#3}{#1}
\begingroup\defname {\defheaderxcond#2\relax$$$#3}{#1}
\interlinepenalty=10000
\interlinepenalty=10000
\endgraf\nobreak\vskip -\parskip\nobreak
\endgraf\nobreak\vskip -\parskip\nobreak
\endgroup}
\endgroup}
 
 
% This definition is run if you use @defvarx
% This definition is run if you use @defvarx
% anywhere other than immediately after a @defvar or @defvarx.
% anywhere other than immediately after a @defvar or @defvarx.
 
 
\def\defvrx #1 {\errmessage{@defvrx in invalid context}}
\def\defvrx #1 {\errmessage{@defvrx in invalid context}}
\def\defvarx #1 {\errmessage{@defvarx in invalid context}}
\def\defvarx #1 {\errmessage{@defvarx in invalid context}}
\def\defoptx #1 {\errmessage{@defoptx in invalid context}}
\def\defoptx #1 {\errmessage{@defoptx in invalid context}}
\def\deftypevarx #1 {\errmessage{@deftypevarx in invalid context}}
\def\deftypevarx #1 {\errmessage{@deftypevarx in invalid context}}
\def\deftypevrx #1 {\errmessage{@deftypevrx in invalid context}}
\def\deftypevrx #1 {\errmessage{@deftypevrx in invalid context}}
 
 
% Now define @deftp
% Now define @deftp
% Args are printed in bold, a slight difference from @defvar.
% Args are printed in bold, a slight difference from @defvar.
 
 
\def\deftpargs #1{\bf \defvarargs{#1}}
\def\deftpargs #1{\bf \defvarargs{#1}}
 
 
% @deftp Class window height width ...
% @deftp Class window height width ...
 
 
\def\deftp{\deftpparsebody\Edeftp\deftpx\deftpheader}
\def\deftp{\deftpparsebody\Edeftp\deftpx\deftpheader}
 
 
\def\deftpheader #1#2#3{\doind {tp}{\code{#2}}%
\def\deftpheader #1#2#3{\doind {tp}{\code{#2}}%
\begingroup\defname {#2}{#1}\deftpargs{#3}\endgroup}
\begingroup\defname {#2}{#1}\deftpargs{#3}\endgroup}
 
 
% This definition is run if you use @deftpx, etc
% This definition is run if you use @deftpx, etc
% anywhere other than immediately after a @deftp, etc.
% anywhere other than immediately after a @deftp, etc.
 
 
\def\deftpx #1 {\errmessage{@deftpx in invalid context}}
\def\deftpx #1 {\errmessage{@deftpx in invalid context}}
 
 
 
 
\message{macros,}
\message{macros,}
% @macro.
% @macro.
 
 
% To do this right we need a feature of e-TeX, \scantokens,
% To do this right we need a feature of e-TeX, \scantokens,
% which we arrange to emulate with a temporary file in ordinary TeX.
% which we arrange to emulate with a temporary file in ordinary TeX.
\ifx\eTeXversion\undefined
\ifx\eTeXversion\undefined
 \newwrite\macscribble
 \newwrite\macscribble
 \def\scanmacro#1{%
 \def\scanmacro#1{%
   \begingroup \newlinechar`\^^M
   \begingroup \newlinechar`\^^M
   \immediate\openout\macscribble=\jobname.tmp
   \immediate\openout\macscribble=\jobname.tmp
   \immediate\write\macscribble{#1}%
   \immediate\write\macscribble{#1}%
   \immediate\closeout\macscribble
   \immediate\closeout\macscribble
   \let\xeatspaces\eatspaces
   \let\xeatspaces\eatspaces
   \input \jobname.tmp
   \input \jobname.tmp
   \endgroup
   \endgroup
}
}
\else
\else
\def\scanmacro#1{%
\def\scanmacro#1{%
\begingroup \newlinechar`\^^M
\begingroup \newlinechar`\^^M
\let\xeatspaces\eatspaces\scantokens{#1}\endgroup}
\let\xeatspaces\eatspaces\scantokens{#1}\endgroup}
\fi
\fi
 
 
\newcount\paramno   % Count of parameters
\newcount\paramno   % Count of parameters
\newtoks\macname    % Macro name
\newtoks\macname    % Macro name
\newif\ifrecursive  % Is it recursive?
\newif\ifrecursive  % Is it recursive?
 
 
% Utility routines.
% Utility routines.
% Thisdoes \let #1 = #2, except with \csnames.
% Thisdoes \let #1 = #2, except with \csnames.
\def\cslet#1#2{%
\def\cslet#1#2{%
\expandafter\expandafter
\expandafter\expandafter
\expandafter\let
\expandafter\let
\expandafter\expandafter
\expandafter\expandafter
\csname#1\endcsname
\csname#1\endcsname
\csname#2\endcsname}
\csname#2\endcsname}
 
 
% Trim leading and trailing spaces off a string.
% Trim leading and trailing spaces off a string.
% Concepts from aro-bend problem 15 (see CTAN).
% Concepts from aro-bend problem 15 (see CTAN).
{\catcode`\@=11
{\catcode`\@=11
\gdef\eatspaces #1{\expandafter\trim@\expandafter{#1 }}
\gdef\eatspaces #1{\expandafter\trim@\expandafter{#1 }}
\gdef\trim@ #1{\trim@@ @#1 @ #1 @ @@}
\gdef\trim@ #1{\trim@@ @#1 @ #1 @ @@}
\gdef\trim@@ #1@ #2@ #3@@{\trim@@@\empty #2 @}
\gdef\trim@@ #1@ #2@ #3@@{\trim@@@\empty #2 @}
\def\unbrace#1{#1}
\def\unbrace#1{#1}
\unbrace{\gdef\trim@@@ #1 } #2@{#1}
\unbrace{\gdef\trim@@@ #1 } #2@{#1}
}
}
 
 
% Trim a single trailing ^^M off a string.
% Trim a single trailing ^^M off a string.
{\catcode`\^^M=12\catcode`\Q=3%
{\catcode`\^^M=12\catcode`\Q=3%
\gdef\eatcr #1{\eatcra #1Q^^MQ}%
\gdef\eatcr #1{\eatcra #1Q^^MQ}%
\gdef\eatcra#1^^MQ{\eatcrb#1Q}%
\gdef\eatcra#1^^MQ{\eatcrb#1Q}%
\gdef\eatcrb#1Q#2Q{#1}%
\gdef\eatcrb#1Q#2Q{#1}%
}
}
 
 
% Macro bodies are absorbed as an argument in a context where
% Macro bodies are absorbed as an argument in a context where
% all characters are catcode 10, 11 or 12, except \ which is active
% all characters are catcode 10, 11 or 12, except \ which is active
% (as in normal texinfo). It is necessary to change the definition of \.
% (as in normal texinfo). It is necessary to change the definition of \.
 
 
% It's necessary to have hard CRs when the macro is executed. This is
% It's necessary to have hard CRs when the macro is executed. This is
% done by  making ^^M (\endlinechar) catcode 12 when reading the macro
% done by  making ^^M (\endlinechar) catcode 12 when reading the macro
% body, and then making it the \newlinechar in \scanmacro.
% body, and then making it the \newlinechar in \scanmacro.
 
 
\def\macrobodyctxt{%
\def\macrobodyctxt{%
  \catcode`\~=12
  \catcode`\~=12
  \catcode`\^=12
  \catcode`\^=12
  \catcode`\_=12
  \catcode`\_=12
  \catcode`\|=12
  \catcode`\|=12
  \catcode`\<=12
  \catcode`\<=12
  \catcode`\>=12
  \catcode`\>=12
  \catcode`\+=12
  \catcode`\+=12
  \catcode`\{=12
  \catcode`\{=12
  \catcode`\}=12
  \catcode`\}=12
  \catcode`\@=12
  \catcode`\@=12
  \catcode`\^^M=12
  \catcode`\^^M=12
  \usembodybackslash}
  \usembodybackslash}
 
 
% \mbodybackslash is the definition of \ in @macro bodies.
% \mbodybackslash is the definition of \ in @macro bodies.
% It maps \foo\ => \csname macarg.foo\endcsname => #N
% It maps \foo\ => \csname macarg.foo\endcsname => #N
% where N is the macro parameter number.
% where N is the macro parameter number.
% We define \csname macarg.\endcsname to be \realbackslash, so
% We define \csname macarg.\endcsname to be \realbackslash, so
% \\ in macro replacement text gets you a backslash.
% \\ in macro replacement text gets you a backslash.
 
 
{\catcode`@=0 @catcode`@\=@active
{\catcode`@=0 @catcode`@\=@active
 @gdef@usembodybackslash{@let\=@mbodybackslash}
 @gdef@usembodybackslash{@let\=@mbodybackslash}
 @gdef@mbodybackslash#1\{@csname macarg.#1@endcsname}
 @gdef@mbodybackslash#1\{@csname macarg.#1@endcsname}
}
}
\expandafter\def\csname macarg.\endcsname{\realbackslash}
\expandafter\def\csname macarg.\endcsname{\realbackslash}
 
 
\def\macro{\recursivefalse\parsearg\macroxxx}
\def\macro{\recursivefalse\parsearg\macroxxx}
\def\rmacro{\recursivetrue\parsearg\macroxxx}
\def\rmacro{\recursivetrue\parsearg\macroxxx}
 
 
\def\macroxxx#1{%
\def\macroxxx#1{%
  \getargs{#1}%           now \macname is the macname and \argl the arglist
  \getargs{#1}%           now \macname is the macname and \argl the arglist
  \ifx\argl\empty       % no arguments
  \ifx\argl\empty       % no arguments
     \paramno=0%
     \paramno=0%
  \else
  \else
     \expandafter\parsemargdef \argl;%
     \expandafter\parsemargdef \argl;%
  \fi
  \fi
  \expandafter\ifx \csname macsave.\the\macname\endcsname \relax
  \expandafter\ifx \csname macsave.\the\macname\endcsname \relax
     \cslet{macsave.\the\macname}{\the\macname}%
     \cslet{macsave.\the\macname}{\the\macname}%
  \else
  \else
     \message{Warning: redefining \the\macname}%
     \message{Warning: redefining \the\macname}%
  \fi
  \fi
  \begingroup \macrobodyctxt
  \begingroup \macrobodyctxt
  \ifrecursive \expandafter\parsermacbody
  \ifrecursive \expandafter\parsermacbody
  \else \expandafter\parsemacbody
  \else \expandafter\parsemacbody
  \fi}
  \fi}
 
 
\def\unmacro{\parsearg\unmacroxxx}
\def\unmacro{\parsearg\unmacroxxx}
\def\unmacroxxx#1{%
\def\unmacroxxx#1{%
  \expandafter\ifx \csname macsave.\the\macname\endcsname \relax
  \expandafter\ifx \csname macsave.\the\macname\endcsname \relax
    \errmessage{Macro \the\macname\ not defined.}%
    \errmessage{Macro \the\macname\ not defined.}%
  \else
  \else
    \cslet{#1}{macsave.#1}%
    \cslet{#1}{macsave.#1}%
    \expandafter\let \csname macsave.\the\macname\endcsname \undefined
    \expandafter\let \csname macsave.\the\macname\endcsname \undefined
  \fi
  \fi
}
}
 
 
% This makes use of the obscure feature that if the last token of a
% This makes use of the obscure feature that if the last token of a
% <parameter list> is #, then the preceding argument is delimited by
% <parameter list> is #, then the preceding argument is delimited by
% an opening brace, and that opening brace is not consumed.
% an opening brace, and that opening brace is not consumed.
\def\getargs#1{\getargsxxx#1{}}
\def\getargs#1{\getargsxxx#1{}}
\def\getargsxxx#1#{\getmacname #1 \relax\getmacargs}
\def\getargsxxx#1#{\getmacname #1 \relax\getmacargs}
\def\getmacname #1 #2\relax{\macname={#1}}
\def\getmacname #1 #2\relax{\macname={#1}}
\def\getmacargs#1{\def\argl{#1}}
\def\getmacargs#1{\def\argl{#1}}
 
 
% Parse the optional {params} list.  Set up \paramno and \paramlist
% Parse the optional {params} list.  Set up \paramno and \paramlist
% so \defmacro knows what to do.  Define \macarg.blah for each blah
% so \defmacro knows what to do.  Define \macarg.blah for each blah
% in the params list, to be ##N where N is the position in that list.
% in the params list, to be ##N where N is the position in that list.
% That gets used by \mbodybackslash (above).
% That gets used by \mbodybackslash (above).
 
 
% We need to get `macro parameter char #' into several definitions.
% We need to get `macro parameter char #' into several definitions.
% The technique used is stolen from LaTeX:  let \hash be something
% The technique used is stolen from LaTeX:  let \hash be something
% unexpandable, insert that wherever you need a #, and then redefine
% unexpandable, insert that wherever you need a #, and then redefine
% it to # just before using the token list produced.
% it to # just before using the token list produced.
%
%
% The same technique is used to protect \eatspaces till just before
% The same technique is used to protect \eatspaces till just before
% the macro is used.
% the macro is used.
 
 
\def\parsemargdef#1;{\paramno=0\def\paramlist{}%
\def\parsemargdef#1;{\paramno=0\def\paramlist{}%
        \let\hash\relax\let\xeatspaces\relax\parsemargdefxxx#1,;,}
        \let\hash\relax\let\xeatspaces\relax\parsemargdefxxx#1,;,}
\def\parsemargdefxxx#1,{%
\def\parsemargdefxxx#1,{%
  \if#1;\let\next=\relax
  \if#1;\let\next=\relax
  \else \let\next=\parsemargdefxxx
  \else \let\next=\parsemargdefxxx
    \advance\paramno by 1%
    \advance\paramno by 1%
    \expandafter\edef\csname macarg.\eatspaces{#1}\endcsname
    \expandafter\edef\csname macarg.\eatspaces{#1}\endcsname
        {\xeatspaces{\hash\the\paramno}}%
        {\xeatspaces{\hash\the\paramno}}%
    \edef\paramlist{\paramlist\hash\the\paramno,}%
    \edef\paramlist{\paramlist\hash\the\paramno,}%
  \fi\next}
  \fi\next}
 
 
% These two commands read recursive and nonrecursive macro bodies.
% These two commands read recursive and nonrecursive macro bodies.
% (They're different since rec and nonrec macros end differently.)
% (They're different since rec and nonrec macros end differently.)
 
 
\long\def\parsemacbody#1@end macro%
\long\def\parsemacbody#1@end macro%
{\xdef\temp{\eatcr{#1}}\endgroup\defmacro}%
{\xdef\temp{\eatcr{#1}}\endgroup\defmacro}%
\long\def\parsermacbody#1@end rmacro%
\long\def\parsermacbody#1@end rmacro%
{\xdef\temp{\eatcr{#1}}\endgroup\defmacro}%
{\xdef\temp{\eatcr{#1}}\endgroup\defmacro}%
 
 
% This defines the macro itself. There are six cases: recursive and
% This defines the macro itself. There are six cases: recursive and
% nonrecursive macros of zero, one, and many arguments.
% nonrecursive macros of zero, one, and many arguments.
% Much magic with \expandafter here.
% Much magic with \expandafter here.
% \xdef is used so that macro definitions will survive the file
% \xdef is used so that macro definitions will survive the file
% they're defined in; @include reads the file inside a group.
% they're defined in; @include reads the file inside a group.
\def\defmacro{%
\def\defmacro{%
  \let\hash=##% convert placeholders to macro parameter chars
  \let\hash=##% convert placeholders to macro parameter chars
  \ifrecursive
  \ifrecursive
    \ifcase\paramno
    \ifcase\paramno
    % 0
    % 0
      \expandafter\xdef\csname\the\macname\endcsname{%
      \expandafter\xdef\csname\the\macname\endcsname{%
        \noexpand\scanmacro{\temp}}%
        \noexpand\scanmacro{\temp}}%
    \or % 1
    \or % 1
      \expandafter\xdef\csname\the\macname\endcsname{%
      \expandafter\xdef\csname\the\macname\endcsname{%
         \noexpand\braceorline\csname\the\macname xxx\endcsname}%
         \noexpand\braceorline\csname\the\macname xxx\endcsname}%
      \expandafter\xdef\csname\the\macname xxx\endcsname##1{%
      \expandafter\xdef\csname\the\macname xxx\endcsname##1{%
         \noexpand\scanmacro{\temp}}%
         \noexpand\scanmacro{\temp}}%
    \else % many
    \else % many
      \expandafter\xdef\csname\the\macname\endcsname##1{%
      \expandafter\xdef\csname\the\macname\endcsname##1{%
          \csname\the\macname xxx\endcsname ##1,}%
          \csname\the\macname xxx\endcsname ##1,}%
      \expandafter\expandafter
      \expandafter\expandafter
      \expandafter\xdef
      \expandafter\xdef
      \expandafter\expandafter
      \expandafter\expandafter
        \csname\the\macname xxx\endcsname
        \csname\the\macname xxx\endcsname
          \paramlist{\noexpand\scanmacro{\temp}}%
          \paramlist{\noexpand\scanmacro{\temp}}%
    \fi
    \fi
  \else
  \else
    \ifcase\paramno
    \ifcase\paramno
    % 0
    % 0
      \expandafter\xdef\csname\the\macname\endcsname{%
      \expandafter\xdef\csname\the\macname\endcsname{%
        \noexpand\norecurse{\the\macname}%
        \noexpand\norecurse{\the\macname}%
        \noexpand\scanmacro{\temp}\egroup}%
        \noexpand\scanmacro{\temp}\egroup}%
    \or % 1
    \or % 1
      \expandafter\xdef\csname\the\macname\endcsname{%
      \expandafter\xdef\csname\the\macname\endcsname{%
         \noexpand\braceorline\csname\the\macname xxx\endcsname}%
         \noexpand\braceorline\csname\the\macname xxx\endcsname}%
      \expandafter\xdef\csname\the\macname xxx\endcsname##1{%
      \expandafter\xdef\csname\the\macname xxx\endcsname##1{%
        \noexpand\norecurse{\the\macname}%
        \noexpand\norecurse{\the\macname}%
        \noexpand\scanmacro{\temp}\egroup}%
        \noexpand\scanmacro{\temp}\egroup}%
    \else % many
    \else % many
      \expandafter\xdef\csname\the\macname\endcsname##1{%
      \expandafter\xdef\csname\the\macname\endcsname##1{%
          \csname\the\macname xxx\endcsname ##1,}%
          \csname\the\macname xxx\endcsname ##1,}%
      \expandafter\expandafter
      \expandafter\expandafter
      \expandafter\xdef
      \expandafter\xdef
      \expandafter\expandafter
      \expandafter\expandafter
      \csname\the\macname xxx\endcsname
      \csname\the\macname xxx\endcsname
      \paramlist{%
      \paramlist{%
          \noexpand\norecurse{\the\macname}%
          \noexpand\norecurse{\the\macname}%
          \noexpand\scanmacro{\temp}\egroup}%
          \noexpand\scanmacro{\temp}\egroup}%
    \fi
    \fi
  \fi}
  \fi}
 
 
\def\norecurse#1{\bgroup\cslet{#1}{macsave.#1}}
\def\norecurse#1{\bgroup\cslet{#1}{macsave.#1}}
 
 
% \braceorline decides whether the next nonwhitespace character is a
% \braceorline decides whether the next nonwhitespace character is a
% {.  If so it reads up to the closing }, if not, it reads the whole
% {.  If so it reads up to the closing }, if not, it reads the whole
% line.  Whatever was read is then fed to the next control sequence
% line.  Whatever was read is then fed to the next control sequence
% as an argument (by \parsebrace or \parsearg)
% as an argument (by \parsebrace or \parsearg)
\def\braceorline#1{\let\next=#1\futurelet\nchar\braceorlinexxx}
\def\braceorline#1{\let\next=#1\futurelet\nchar\braceorlinexxx}
\def\braceorlinexxx{%
\def\braceorlinexxx{%
  \ifx\nchar\bgroup\else
  \ifx\nchar\bgroup\else
    \expandafter\parsearg
    \expandafter\parsearg
  \fi \next}
  \fi \next}
 
 
 
 
\message{cross references,}
\message{cross references,}
\newwrite\auxfile
\newwrite\auxfile
 
 
\newif\ifhavexrefs    % True if xref values are known.
\newif\ifhavexrefs    % True if xref values are known.
\newif\ifwarnedxrefs  % True if we warned once that they aren't known.
\newif\ifwarnedxrefs  % True if we warned once that they aren't known.
 
 
% @inforef is relatively simple.
% @inforef is relatively simple.
\def\inforef #1{\inforefzzz #1,,,,**}
\def\inforef #1{\inforefzzz #1,,,,**}
\def\inforefzzz #1,#2,#3,#4**{\putwordSee{} \putwordInfo{} \putwordfile{} \file{\ignorespaces #3{}},
\def\inforefzzz #1,#2,#3,#4**{\putwordSee{} \putwordInfo{} \putwordfile{} \file{\ignorespaces #3{}},
  node \samp{\ignorespaces#1{}}}
  node \samp{\ignorespaces#1{}}}
 
 
% @node's job is to define \lastnode.
% @node's job is to define \lastnode.
\def\node{\ENVcheck\parsearg\nodezzz}
\def\node{\ENVcheck\parsearg\nodezzz}
\def\nodezzz#1{\nodexxx [#1,]}
\def\nodezzz#1{\nodexxx [#1,]}
\def\nodexxx[#1,#2]{\gdef\lastnode{#1}}
\def\nodexxx[#1,#2]{\gdef\lastnode{#1}}
\let\nwnode=\node
\let\nwnode=\node
\let\lastnode=\relax
\let\lastnode=\relax
 
 
% The sectioning commands (@chapter, etc.) call these.
% The sectioning commands (@chapter, etc.) call these.
\def\donoderef{%
\def\donoderef{%
  \ifx\lastnode\relax\else
  \ifx\lastnode\relax\else
    \expandafter\expandafter\expandafter\setref{\lastnode}%
    \expandafter\expandafter\expandafter\setref{\lastnode}%
      {Ysectionnumberandtype}%
      {Ysectionnumberandtype}%
    \global\let\lastnode=\relax
    \global\let\lastnode=\relax
  \fi
  \fi
}
}
\def\unnumbnoderef{%
\def\unnumbnoderef{%
  \ifx\lastnode\relax\else
  \ifx\lastnode\relax\else
    \expandafter\expandafter\expandafter\setref{\lastnode}{Ynothing}%
    \expandafter\expandafter\expandafter\setref{\lastnode}{Ynothing}%
    \global\let\lastnode=\relax
    \global\let\lastnode=\relax
  \fi
  \fi
}
}
\def\appendixnoderef{%
\def\appendixnoderef{%
  \ifx\lastnode\relax\else
  \ifx\lastnode\relax\else
    \expandafter\expandafter\expandafter\setref{\lastnode}%
    \expandafter\expandafter\expandafter\setref{\lastnode}%
      {Yappendixletterandtype}%
      {Yappendixletterandtype}%
    \global\let\lastnode=\relax
    \global\let\lastnode=\relax
  \fi
  \fi
}
}
 
 
 
 
% @anchor{NAME} -- define xref target at arbitrary point.
% @anchor{NAME} -- define xref target at arbitrary point.
%
%
\def\anchor#1{\setref{#1}{Ynothing}}
\def\anchor#1{\setref{#1}{Ynothing}}
 
 
 
 
% \setref{NAME}{SNT} defines a cross-reference point NAME, namely
% \setref{NAME}{SNT} defines a cross-reference point NAME, namely
% NAME-title, NAME-pg, and NAME-SNT.  Called from \foonoderef.  We have
% NAME-title, NAME-pg, and NAME-SNT.  Called from \foonoderef.  We have
% to set \indexdummies so commands such as @code in a section title
% to set \indexdummies so commands such as @code in a section title
% aren't expanded.  It would be nicer not to expand the titles in the
% aren't expanded.  It would be nicer not to expand the titles in the
% first place, but there's so many layers that that is hard to do.
% first place, but there's so many layers that that is hard to do.
%
%
\def\setref#1#2{{%
\def\setref#1#2{{%
  \indexdummies
  \indexdummies
  \dosetq{#1-title}{Ytitle}%
  \dosetq{#1-title}{Ytitle}%
  \dosetq{#1-pg}{Ypagenumber}%
  \dosetq{#1-pg}{Ypagenumber}%
  \dosetq{#1-snt}{#2}
  \dosetq{#1-snt}{#2}
}}
}}
 
 
% @xref, @pxref, and @ref generate cross-references.  For \xrefX, #1 is
% @xref, @pxref, and @ref generate cross-references.  For \xrefX, #1 is
% the node name, #2 the name of the Info cross-reference, #3 the printed
% the node name, #2 the name of the Info cross-reference, #3 the printed
% node name, #4 the name of the Info file, #5 the name of the printed
% node name, #4 the name of the Info file, #5 the name of the printed
% manual.  All but the node name can be omitted.
% manual.  All but the node name can be omitted.
%
%
\def\pxref#1{\putwordsee{} \xrefX[#1,,,,,,,]}
\def\pxref#1{\putwordsee{} \xrefX[#1,,,,,,,]}
\def\xref#1{\putwordSee{} \xrefX[#1,,,,,,,]}
\def\xref#1{\putwordSee{} \xrefX[#1,,,,,,,]}
\def\ref#1{\xrefX[#1,,,,,,,]}
\def\ref#1{\xrefX[#1,,,,,,,]}
\def\xrefX[#1,#2,#3,#4,#5,#6]{\begingroup
\def\xrefX[#1,#2,#3,#4,#5,#6]{\begingroup
  \def\printedmanual{\ignorespaces #5}%
  \def\printedmanual{\ignorespaces #5}%
  \def\printednodename{\ignorespaces #3}%
  \def\printednodename{\ignorespaces #3}%
  \setbox1=\hbox{\printedmanual}%
  \setbox1=\hbox{\printedmanual}%
  \setbox0=\hbox{\printednodename}%
  \setbox0=\hbox{\printednodename}%
  \ifdim \wd0 = 0pt
  \ifdim \wd0 = 0pt
    % No printed node name was explicitly given.
    % No printed node name was explicitly given.
    \expandafter\ifx\csname SETxref-automatic-section-title\endcsname\relax
    \expandafter\ifx\csname SETxref-automatic-section-title\endcsname\relax
      % Use the node name inside the square brackets.
      % Use the node name inside the square brackets.
      \def\printednodename{\ignorespaces #1}%
      \def\printednodename{\ignorespaces #1}%
    \else
    \else
      % Use the actual chapter/section title appear inside
      % Use the actual chapter/section title appear inside
      % the square brackets.  Use the real section title if we have it.
      % the square brackets.  Use the real section title if we have it.
      \ifdim \wd1 > 0pt
      \ifdim \wd1 > 0pt
        % It is in another manual, so we don't have it.
        % It is in another manual, so we don't have it.
        \def\printednodename{\ignorespaces #1}%
        \def\printednodename{\ignorespaces #1}%
      \else
      \else
        \ifhavexrefs
        \ifhavexrefs
          % We know the real title if we have the xref values.
          % We know the real title if we have the xref values.
          \def\printednodename{\refx{#1-title}{}}%
          \def\printednodename{\refx{#1-title}{}}%
        \else
        \else
          % Otherwise just copy the Info node name.
          % Otherwise just copy the Info node name.
          \def\printednodename{\ignorespaces #1}%
          \def\printednodename{\ignorespaces #1}%
        \fi%
        \fi%
      \fi
      \fi
    \fi
    \fi
  \fi
  \fi
  %
  %
  % If we use \unhbox0 and \unhbox1 to print the node names, TeX does not
  % If we use \unhbox0 and \unhbox1 to print the node names, TeX does not
  % insert empty discretionaries after hyphens, which means that it will
  % insert empty discretionaries after hyphens, which means that it will
  % not find a line break at a hyphen in a node names.  Since some manuals
  % not find a line break at a hyphen in a node names.  Since some manuals
  % are best written with fairly long node names, containing hyphens, this
  % are best written with fairly long node names, containing hyphens, this
  % is a loss.  Therefore, we give the text of the node name again, so it
  % is a loss.  Therefore, we give the text of the node name again, so it
  % is as if TeX is seeing it for the first time.
  % is as if TeX is seeing it for the first time.
  \ifdim \wd1 > 0pt
  \ifdim \wd1 > 0pt
    \putwordsection{} ``\printednodename'' in \cite{\printedmanual}%
    \putwordsection{} ``\printednodename'' in \cite{\printedmanual}%
  \else
  \else
    % _ (for example) has to be the character _ for the purposes of the
    % _ (for example) has to be the character _ for the purposes of the
    % control sequence corresponding to the node, but it has to expand
    % control sequence corresponding to the node, but it has to expand
    % into the usual \leavevmode...\vrule stuff for purposes of
    % into the usual \leavevmode...\vrule stuff for purposes of
    % printing. So we \turnoffactive for the \refx-snt, back on for the
    % printing. So we \turnoffactive for the \refx-snt, back on for the
    % printing, back off for the \refx-pg.
    % printing, back off for the \refx-pg.
    {\normalturnoffactive
    {\normalturnoffactive
     % Only output a following space if the -snt ref is nonempty; for
     % Only output a following space if the -snt ref is nonempty; for
     % @unnumbered and @anchor, it won't be.
     % @unnumbered and @anchor, it won't be.
     \setbox2 = \hbox{\ignorespaces \refx{#1-snt}{}}%
     \setbox2 = \hbox{\ignorespaces \refx{#1-snt}{}}%
     \ifdim \wd2 > 0pt \refx{#1-snt}\space\fi
     \ifdim \wd2 > 0pt \refx{#1-snt}\space\fi
    }%
    }%
    % [mynode],
    % [mynode],
    [\printednodename],\space
    [\printednodename],\space
    % page 3
    % page 3
    \turnoffactive \putwordpage\tie\refx{#1-pg}{}%
    \turnoffactive \putwordpage\tie\refx{#1-pg}{}%
  \fi
  \fi
\endgroup}
\endgroup}
 
 
% \dosetq is the interface for calls from other macros
% \dosetq is the interface for calls from other macros
 
 
% Use \normalturnoffactive so that punctuation chars such as underscore
% Use \normalturnoffactive so that punctuation chars such as underscore
% and backslash work in node names.  (\turnoffactive doesn't do \.)
% and backslash work in node names.  (\turnoffactive doesn't do \.)
\def\dosetq#1#2{%
\def\dosetq#1#2{%
  {\let\folio=0
  {\let\folio=0
   \normalturnoffactive
   \normalturnoffactive
   \edef\next{\write\auxfile{\internalsetq{#1}{#2}}}%
   \edef\next{\write\auxfile{\internalsetq{#1}{#2}}}%
   \iflinks
   \iflinks
     \next
     \next
   \fi
   \fi
  }%
  }%
}
}
 
 
% \internalsetq {foo}{page} expands into
% \internalsetq {foo}{page} expands into
% CHARACTERS 'xrdef {foo}{...expansion of \Ypage...}
% CHARACTERS 'xrdef {foo}{...expansion of \Ypage...}
% When the aux file is read, ' is the escape character
% When the aux file is read, ' is the escape character
 
 
\def\internalsetq #1#2{'xrdef {#1}{\csname #2\endcsname}}
\def\internalsetq #1#2{'xrdef {#1}{\csname #2\endcsname}}
 
 
% Things to be expanded by \internalsetq
% Things to be expanded by \internalsetq
 
 
\def\Ypagenumber{\folio}
\def\Ypagenumber{\folio}
 
 
\def\Ytitle{\thissection}
\def\Ytitle{\thissection}
 
 
\def\Ynothing{}
\def\Ynothing{}
 
 
\def\Ysectionnumberandtype{%
\def\Ysectionnumberandtype{%
\ifnum\secno=0 \putwordChapter\xreftie\the\chapno %
\ifnum\secno=0 \putwordChapter\xreftie\the\chapno %
\else \ifnum \subsecno=0 \putwordSection\xreftie\the\chapno.\the\secno %
\else \ifnum \subsecno=0 \putwordSection\xreftie\the\chapno.\the\secno %
\else \ifnum \subsubsecno=0 %
\else \ifnum \subsubsecno=0 %
\putwordSection\xreftie\the\chapno.\the\secno.\the\subsecno %
\putwordSection\xreftie\the\chapno.\the\secno.\the\subsecno %
\else %
\else %
\putwordSection\xreftie\the\chapno.\the\secno.\the\subsecno.\the\subsubsecno %
\putwordSection\xreftie\the\chapno.\the\secno.\the\subsecno.\the\subsubsecno %
\fi \fi \fi }
\fi \fi \fi }
 
 
\def\Yappendixletterandtype{%
\def\Yappendixletterandtype{%
\ifnum\secno=0 \putwordAppendix\xreftie'char\the\appendixno{}%
\ifnum\secno=0 \putwordAppendix\xreftie'char\the\appendixno{}%
\else \ifnum \subsecno=0 \putwordSection\xreftie'char\the\appendixno.\the\secno %
\else \ifnum \subsecno=0 \putwordSection\xreftie'char\the\appendixno.\the\secno %
\else \ifnum \subsubsecno=0 %
\else \ifnum \subsubsecno=0 %
\putwordSection\xreftie'char\the\appendixno.\the\secno.\the\subsecno %
\putwordSection\xreftie'char\the\appendixno.\the\secno.\the\subsecno %
\else %
\else %
\putwordSection\xreftie'char\the\appendixno.\the\secno.\the\subsecno.\the\subsubsecno %
\putwordSection\xreftie'char\the\appendixno.\the\secno.\the\subsecno.\the\subsubsecno %
\fi \fi \fi }
\fi \fi \fi }
 
 
\gdef\xreftie{'tie}
\gdef\xreftie{'tie}
 
 
% Use TeX 3.0's \inputlineno to get the line number, for better error
% Use TeX 3.0's \inputlineno to get the line number, for better error
% messages, but if we're using an old version of TeX, don't do anything.
% messages, but if we're using an old version of TeX, don't do anything.
%
%
\ifx\inputlineno\thisisundefined
\ifx\inputlineno\thisisundefined
  \let\linenumber = \empty % Non-3.0.
  \let\linenumber = \empty % Non-3.0.
\else
\else
  \def\linenumber{\the\inputlineno:\space}
  \def\linenumber{\the\inputlineno:\space}
\fi
\fi
 
 
% Define \refx{NAME}{SUFFIX} to reference a cross-reference string named NAME.
% Define \refx{NAME}{SUFFIX} to reference a cross-reference string named NAME.
% If its value is nonempty, SUFFIX is output afterward.
% If its value is nonempty, SUFFIX is output afterward.
 
 
\def\refx#1#2{%
\def\refx#1#2{%
  \expandafter\ifx\csname X#1\endcsname\relax
  \expandafter\ifx\csname X#1\endcsname\relax
    % If not defined, say something at least.
    % If not defined, say something at least.
    \angleleft un\-de\-fined\angleright
    \angleleft un\-de\-fined\angleright
    \iflinks
    \iflinks
      \ifhavexrefs
      \ifhavexrefs
        \message{\linenumber Undefined cross reference `#1'.}%
        \message{\linenumber Undefined cross reference `#1'.}%
      \else
      \else
        \ifwarnedxrefs\else
        \ifwarnedxrefs\else
          \global\warnedxrefstrue
          \global\warnedxrefstrue
          \message{Cross reference values unknown; you must run TeX again.}%
          \message{Cross reference values unknown; you must run TeX again.}%
        \fi
        \fi
      \fi
      \fi
    \fi
    \fi
  \else
  \else
    % It's defined, so just use it.
    % It's defined, so just use it.
    \csname X#1\endcsname
    \csname X#1\endcsname
  \fi
  \fi
  #2% Output the suffix in any case.
  #2% Output the suffix in any case.
}
}
 
 
% This is the macro invoked by entries in the aux file.
% This is the macro invoked by entries in the aux file.
%
%
\def\xrdef#1{\begingroup
\def\xrdef#1{\begingroup
  % Reenable \ as an escape while reading the second argument.
  % Reenable \ as an escape while reading the second argument.
  \catcode`\\ = 0
  \catcode`\\ = 0
  \afterassignment\endgroup
  \afterassignment\endgroup
  \expandafter\gdef\csname X#1\endcsname
  \expandafter\gdef\csname X#1\endcsname
}
}
 
 
% Read the last existing aux file, if any.  No error if none exists.
% Read the last existing aux file, if any.  No error if none exists.
\def\readauxfile{\begingroup
\def\readauxfile{\begingroup
  \catcode`\^^@=\other
  \catcode`\^^@=\other
  \catcode`\^^A=\other
  \catcode`\^^A=\other
  \catcode`\^^B=\other
  \catcode`\^^B=\other
  \catcode`\^^C=\other
  \catcode`\^^C=\other
  \catcode`\^^D=\other
  \catcode`\^^D=\other
  \catcode`\^^E=\other
  \catcode`\^^E=\other
  \catcode`\^^F=\other
  \catcode`\^^F=\other
  \catcode`\^^G=\other
  \catcode`\^^G=\other
  \catcode`\^^H=\other
  \catcode`\^^H=\other
  \catcode`\^^K=\other
  \catcode`\^^K=\other
  \catcode`\^^L=\other
  \catcode`\^^L=\other
  \catcode`\^^N=\other
  \catcode`\^^N=\other
  \catcode`\^^P=\other
  \catcode`\^^P=\other
  \catcode`\^^Q=\other
  \catcode`\^^Q=\other
  \catcode`\^^R=\other
  \catcode`\^^R=\other
  \catcode`\^^S=\other
  \catcode`\^^S=\other
  \catcode`\^^T=\other
  \catcode`\^^T=\other
  \catcode`\^^U=\other
  \catcode`\^^U=\other
  \catcode`\^^V=\other
  \catcode`\^^V=\other
  \catcode`\^^W=\other
  \catcode`\^^W=\other
  \catcode`\^^X=\other
  \catcode`\^^X=\other
  \catcode`\^^Z=\other
  \catcode`\^^Z=\other
  \catcode`\^^[=\other
  \catcode`\^^[=\other
  \catcode`\^^\=\other
  \catcode`\^^\=\other
  \catcode`\^^]=\other
  \catcode`\^^]=\other
  \catcode`\^^^=\other
  \catcode`\^^^=\other
  \catcode`\^^_=\other
  \catcode`\^^_=\other
  \catcode`\@=\other
  \catcode`\@=\other
  \catcode`\^=\other
  \catcode`\^=\other
  % It was suggested to define this as 7, which would allow ^^e4 etc.
  % It was suggested to define this as 7, which would allow ^^e4 etc.
  % in xref tags, i.e., node names.  But since ^^e4 notation isn't
  % in xref tags, i.e., node names.  But since ^^e4 notation isn't
  % supported in the main text, it doesn't seem desirable.  Furthermore,
  % supported in the main text, it doesn't seem desirable.  Furthermore,
  % that is not enough: for node names that actually contain a ^
  % that is not enough: for node names that actually contain a ^
  % character, we would end up writing a line like this: 'xrdef {'hat
  % character, we would end up writing a line like this: 'xrdef {'hat
  % b-title}{'hat b} and \xrdef does a \csname...\endcsname on the first
  % b-title}{'hat b} and \xrdef does a \csname...\endcsname on the first
  % argument, and \hat is not an expandable control sequence.  It could
  % argument, and \hat is not an expandable control sequence.  It could
  % all be worked out, but why?  Either we support ^^ or we don't.
  % all be worked out, but why?  Either we support ^^ or we don't.
  %
  %
  % The other change necessary for this was to define \auxhat:
  % The other change necessary for this was to define \auxhat:
  % \def\auxhat{\def^{'hat }}% extra space so ok if followed by letter
  % \def\auxhat{\def^{'hat }}% extra space so ok if followed by letter
  % and then to call \auxhat in \setq.
  % and then to call \auxhat in \setq.
  %
  %
  \catcode`\~=\other
  \catcode`\~=\other
  \catcode`\[=\other
  \catcode`\[=\other
  \catcode`\]=\other
  \catcode`\]=\other
  \catcode`\"=\other
  \catcode`\"=\other
  \catcode`\_=\other
  \catcode`\_=\other
  \catcode`\|=\other
  \catcode`\|=\other
  \catcode`\<=\other
  \catcode`\<=\other
  \catcode`\>=\other
  \catcode`\>=\other
  \catcode`\$=\other
  \catcode`\$=\other
  \catcode`\#=\other
  \catcode`\#=\other
  \catcode`\&=\other
  \catcode`\&=\other
  \catcode`+=\other % avoid \+ for paranoia even though we've turned it off
  \catcode`+=\other % avoid \+ for paranoia even though we've turned it off
  % Make the characters 128-255 be printing characters
  % Make the characters 128-255 be printing characters
  {%
  {%
    \count 1=128
    \count 1=128
    \def\loop{%
    \def\loop{%
      \catcode\count 1=\other
      \catcode\count 1=\other
      \advance\count 1 by 1
      \advance\count 1 by 1
      \ifnum \count 1<256 \loop \fi
      \ifnum \count 1<256 \loop \fi
    }%
    }%
  }%
  }%
  % The aux file uses ' as the escape (for now).
  % The aux file uses ' as the escape (for now).
  % Turn off \ as an escape so we do not lose on
  % Turn off \ as an escape so we do not lose on
  % entries which were dumped with control sequences in their names.
  % entries which were dumped with control sequences in their names.
  % For example, 'xrdef {$\leq $-fun}{page ...} made by @defun ^^
  % For example, 'xrdef {$\leq $-fun}{page ...} made by @defun ^^
  % Reference to such entries still does not work the way one would wish,
  % Reference to such entries still does not work the way one would wish,
  % but at least they do not bomb out when the aux file is read in.
  % but at least they do not bomb out when the aux file is read in.
  \catcode`\{=1
  \catcode`\{=1
  \catcode`\}=2
  \catcode`\}=2
  \catcode`\%=\other
  \catcode`\%=\other
  \catcode`\'=0
  \catcode`\'=0
  \catcode`\\=\other
  \catcode`\\=\other
  %
  %
  \openin 1 \jobname.aux
  \openin 1 \jobname.aux
  \ifeof 1 \else
  \ifeof 1 \else
    \closein 1
    \closein 1
    \input \jobname.aux
    \input \jobname.aux
    \global\havexrefstrue
    \global\havexrefstrue
    \global\warnedobstrue
    \global\warnedobstrue
  \fi
  \fi
  % Open the new aux file.  TeX will close it automatically at exit.
  % Open the new aux file.  TeX will close it automatically at exit.
  \openout\auxfile=\jobname.aux
  \openout\auxfile=\jobname.aux
\endgroup}
\endgroup}
 
 
 
 
% Footnotes.
% Footnotes.
 
 
\newcount \footnoteno
\newcount \footnoteno
 
 
% The trailing space in the following definition for supereject is
% The trailing space in the following definition for supereject is
% vital for proper filling; pages come out unaligned when you do a
% vital for proper filling; pages come out unaligned when you do a
% pagealignmacro call if that space before the closing brace is
% pagealignmacro call if that space before the closing brace is
% removed. (Generally, numeric constants should always be followed by a
% removed. (Generally, numeric constants should always be followed by a
% space to prevent strange expansion errors.)
% space to prevent strange expansion errors.)
\def\supereject{\par\penalty -20000\footnoteno =0 }
\def\supereject{\par\penalty -20000\footnoteno =0 }
 
 
% @footnotestyle is meaningful for info output only.
% @footnotestyle is meaningful for info output only.
\let\footnotestyle=\comment
\let\footnotestyle=\comment
 
 
\let\ptexfootnote=\footnote
\let\ptexfootnote=\footnote
 
 
{\catcode `\@=11
{\catcode `\@=11
%
%
% Auto-number footnotes.  Otherwise like plain.
% Auto-number footnotes.  Otherwise like plain.
\gdef\footnote{%
\gdef\footnote{%
  \global\advance\footnoteno by \@ne
  \global\advance\footnoteno by \@ne
  \edef\thisfootno{$^{\the\footnoteno}$}%
  \edef\thisfootno{$^{\the\footnoteno}$}%
  %
  %
  % In case the footnote comes at the end of a sentence, preserve the
  % In case the footnote comes at the end of a sentence, preserve the
  % extra spacing after we do the footnote number.
  % extra spacing after we do the footnote number.
  \let\@sf\empty
  \let\@sf\empty
  \ifhmode\edef\@sf{\spacefactor\the\spacefactor}\/\fi
  \ifhmode\edef\@sf{\spacefactor\the\spacefactor}\/\fi
  %
  %
  % Remove inadvertent blank space before typesetting the footnote number.
  % Remove inadvertent blank space before typesetting the footnote number.
  \unskip
  \unskip
  \thisfootno\@sf
  \thisfootno\@sf
  \footnotezzz
  \footnotezzz
}%
}%
 
 
% Don't bother with the trickery in plain.tex to not require the
% Don't bother with the trickery in plain.tex to not require the
% footnote text as a parameter.  Our footnotes don't need to be so general.
% footnote text as a parameter.  Our footnotes don't need to be so general.
%
%
% Oh yes, they do; otherwise, @ifset and anything else that uses
% Oh yes, they do; otherwise, @ifset and anything else that uses
% \parseargline fail inside footnotes because the tokens are fixed when
% \parseargline fail inside footnotes because the tokens are fixed when
% the footnote is read.  --karl, 16nov96.
% the footnote is read.  --karl, 16nov96.
%
%
\long\gdef\footnotezzz{\insert\footins\bgroup
\long\gdef\footnotezzz{\insert\footins\bgroup
  % We want to typeset this text as a normal paragraph, even if the
  % We want to typeset this text as a normal paragraph, even if the
  % footnote reference occurs in (for example) a display environment.
  % footnote reference occurs in (for example) a display environment.
  % So reset some parameters.
  % So reset some parameters.
  \interlinepenalty\interfootnotelinepenalty
  \interlinepenalty\interfootnotelinepenalty
  \splittopskip\ht\strutbox % top baseline for broken footnotes
  \splittopskip\ht\strutbox % top baseline for broken footnotes
  \splitmaxdepth\dp\strutbox
  \splitmaxdepth\dp\strutbox
  \floatingpenalty\@MM
  \floatingpenalty\@MM
  \leftskip\z@skip
  \leftskip\z@skip
  \rightskip\z@skip
  \rightskip\z@skip
  \spaceskip\z@skip
  \spaceskip\z@skip
  \xspaceskip\z@skip
  \xspaceskip\z@skip
  \parindent\defaultparindent
  \parindent\defaultparindent
  %
  %
  % Hang the footnote text off the number.
  % Hang the footnote text off the number.
  \hang
  \hang
  \textindent{\thisfootno}%
  \textindent{\thisfootno}%
  %
  %
  % Don't crash into the line above the footnote text.  Since this
  % Don't crash into the line above the footnote text.  Since this
  % expands into a box, it must come within the paragraph, lest it
  % expands into a box, it must come within the paragraph, lest it
  % provide a place where TeX can split the footnote.
  % provide a place where TeX can split the footnote.
  \footstrut
  \footstrut
  \futurelet\next\fo@t
  \futurelet\next\fo@t
}
}
\def\fo@t{\ifcat\bgroup\noexpand\next \let\next\f@@t
\def\fo@t{\ifcat\bgroup\noexpand\next \let\next\f@@t
  \else\let\next\f@t\fi \next}
  \else\let\next\f@t\fi \next}
\def\f@@t{\bgroup\aftergroup\@foot\let\next}
\def\f@@t{\bgroup\aftergroup\@foot\let\next}
\def\f@t#1{#1\@foot}
\def\f@t#1{#1\@foot}
\def\@foot{\strut\egroup}
\def\@foot{\strut\egroup}
 
 
}%end \catcode `\@=11
}%end \catcode `\@=11
 
 
% Set the baselineskip to #1, and the lineskip and strut size
% Set the baselineskip to #1, and the lineskip and strut size
% correspondingly.  There is no deep meaning behind these magic numbers
% correspondingly.  There is no deep meaning behind these magic numbers
% used as factors; they just match (closely enough) what Knuth defined.
% used as factors; they just match (closely enough) what Knuth defined.
%
%
\def\lineskipfactor{.08333}
\def\lineskipfactor{.08333}
\def\strutheightpercent{.70833}
\def\strutheightpercent{.70833}
\def\strutdepthpercent {.29167}
\def\strutdepthpercent {.29167}
%
%
\def\setleading#1{%
\def\setleading#1{%
  \normalbaselineskip = #1\relax
  \normalbaselineskip = #1\relax
  \normallineskip = \lineskipfactor\normalbaselineskip
  \normallineskip = \lineskipfactor\normalbaselineskip
  \normalbaselines
  \normalbaselines
  \setbox\strutbox =\hbox{%
  \setbox\strutbox =\hbox{%
    \vrule width0pt height\strutheightpercent\baselineskip
    \vrule width0pt height\strutheightpercent\baselineskip
                    depth \strutdepthpercent \baselineskip
                    depth \strutdepthpercent \baselineskip
  }%
  }%
}
}
 
 
% @| inserts a changebar to the left of the current line.  It should
% @| inserts a changebar to the left of the current line.  It should
% surround any changed text.  This approach does *not* work if the
% surround any changed text.  This approach does *not* work if the
% change spans more than two lines of output.  To handle that, we would
% change spans more than two lines of output.  To handle that, we would
% have adopt a much more difficult approach (putting marks into the main
% have adopt a much more difficult approach (putting marks into the main
% vertical list for the beginning and end of each change).
% vertical list for the beginning and end of each change).
%
%
\def\|{%
\def\|{%
  % \vadjust can only be used in horizontal mode.
  % \vadjust can only be used in horizontal mode.
  \leavevmode
  \leavevmode
  %
  %
  % Append this vertical mode material after the current line in the output.
  % Append this vertical mode material after the current line in the output.
  \vadjust{%
  \vadjust{%
    % We want to insert a rule with the height and depth of the current
    % We want to insert a rule with the height and depth of the current
    % leading; that is exactly what \strutbox is supposed to record.
    % leading; that is exactly what \strutbox is supposed to record.
    \vskip-\baselineskip
    \vskip-\baselineskip
    %
    %
    % \vadjust-items are inserted at the left edge of the type.  So
    % \vadjust-items are inserted at the left edge of the type.  So
    % the \llap here moves out into the left-hand margin.
    % the \llap here moves out into the left-hand margin.
    \llap{%
    \llap{%
      %
      %
      % For a thicker or thinner bar, change the `1pt'.
      % For a thicker or thinner bar, change the `1pt'.
      \vrule height\baselineskip width1pt
      \vrule height\baselineskip width1pt
      %
      %
      % This is the space between the bar and the text.
      % This is the space between the bar and the text.
      \hskip 12pt
      \hskip 12pt
    }%
    }%
  }%
  }%
}
}
 
 
% For a final copy, take out the rectangles
% For a final copy, take out the rectangles
% that mark overfull boxes (in case you have decided
% that mark overfull boxes (in case you have decided
% that the text looks ok even though it passes the margin).
% that the text looks ok even though it passes the margin).
%
%
\def\finalout{\overfullrule=0pt}
\def\finalout{\overfullrule=0pt}
 
 
% @image.  We use the macros from epsf.tex to support this.
% @image.  We use the macros from epsf.tex to support this.
% If epsf.tex is not installed and @image is used, we complain.
% If epsf.tex is not installed and @image is used, we complain.
%
%
% Check for and read epsf.tex up front.  If we read it only at @image
% Check for and read epsf.tex up front.  If we read it only at @image
% time, we might be inside a group, and then its definitions would get
% time, we might be inside a group, and then its definitions would get
% undone and the next image would fail.
% undone and the next image would fail.
\openin 1 = epsf.tex
\openin 1 = epsf.tex
\ifeof 1 \else
\ifeof 1 \else
  \closein 1
  \closein 1
  % Do not bother showing banner with post-v2.7 epsf.tex (available in
  % Do not bother showing banner with post-v2.7 epsf.tex (available in
  % doc/epsf.tex until it shows up on ctan).
  % doc/epsf.tex until it shows up on ctan).
  \def\epsfannounce{\toks0 = }%
  \def\epsfannounce{\toks0 = }%
  \input epsf.tex
  \input epsf.tex
\fi
\fi
%
%
\newif\ifwarnednoepsf
\newif\ifwarnednoepsf
\newhelp\noepsfhelp{epsf.tex must be installed for images to
\newhelp\noepsfhelp{epsf.tex must be installed for images to
  work.  It is also included in the Texinfo distribution, or you can get
  work.  It is also included in the Texinfo distribution, or you can get
  it from ftp://ftp.tug.org/tex/epsf.tex.}
  it from ftp://ftp.tug.org/tex/epsf.tex.}
%
%
% Only complain once about lack of epsf.tex.
% Only complain once about lack of epsf.tex.
\def\image#1{%
\def\image#1{%
  \ifx\epsfbox\undefined
  \ifx\epsfbox\undefined
    \ifwarnednoepsf \else
    \ifwarnednoepsf \else
      \errhelp = \noepsfhelp
      \errhelp = \noepsfhelp
      \errmessage{epsf.tex not found, images will be ignored}%
      \errmessage{epsf.tex not found, images will be ignored}%
      \global\warnednoepsftrue
      \global\warnednoepsftrue
    \fi
    \fi
  \else
  \else
    \imagexxx #1,,,\finish
    \imagexxx #1,,,\finish
  \fi
  \fi
}
}
%
%
% Arguments to @image:
% Arguments to @image:
% #1 is (mandatory) image filename; we tack on .eps extension.
% #1 is (mandatory) image filename; we tack on .eps extension.
% #2 is (optional) width, #3 is (optional) height.
% #2 is (optional) width, #3 is (optional) height.
% #4 is just the usual extra ignored arg for parsing this stuff.
% #4 is just the usual extra ignored arg for parsing this stuff.
\def\imagexxx#1,#2,#3,#4\finish{%
\def\imagexxx#1,#2,#3,#4\finish{%
  % \epsfbox itself resets \epsf?size at each figure.
  % \epsfbox itself resets \epsf?size at each figure.
  \setbox0 = \hbox{\ignorespaces #2}\ifdim\wd0 > 0pt \epsfxsize=#2\relax \fi
  \setbox0 = \hbox{\ignorespaces #2}\ifdim\wd0 > 0pt \epsfxsize=#2\relax \fi
  \setbox0 = \hbox{\ignorespaces #3}\ifdim\wd0 > 0pt \epsfysize=#3\relax \fi
  \setbox0 = \hbox{\ignorespaces #3}\ifdim\wd0 > 0pt \epsfysize=#3\relax \fi
  % If the image is by itself, center it.
  % If the image is by itself, center it.
  \ifvmode
  \ifvmode
    \nobreak\medskip
    \nobreak\medskip
    \nobreak
    \nobreak
    \centerline{\epsfbox{#1.eps}}%
    \centerline{\epsfbox{#1.eps}}%
    \bigbreak
    \bigbreak
  \else
  \else
    \epsfbox{#1.eps}%
    \epsfbox{#1.eps}%
  \fi
  \fi
}
}
 
 
 
 
\message{paper sizes,}
\message{paper sizes,}
% And other related parameters.
% And other related parameters.
 
 
\newdimen\defaultparindent \defaultparindent = 15pt
\newdimen\defaultparindent \defaultparindent = 15pt
 
 
\chapheadingskip = 15pt plus 4pt minus 2pt
\chapheadingskip = 15pt plus 4pt minus 2pt
\secheadingskip = 12pt plus 3pt minus 2pt
\secheadingskip = 12pt plus 3pt minus 2pt
\subsecheadingskip = 9pt plus 2pt minus 2pt
\subsecheadingskip = 9pt plus 2pt minus 2pt
 
 
% Prevent underfull vbox error messages.
% Prevent underfull vbox error messages.
\vbadness = 10000
\vbadness = 10000
 
 
% Don't be so finicky about underfull hboxes, either.
% Don't be so finicky about underfull hboxes, either.
\hbadness = 2000
\hbadness = 2000
 
 
% Following George Bush, just get rid of widows and orphans.
% Following George Bush, just get rid of widows and orphans.
\widowpenalty=10000
\widowpenalty=10000
\clubpenalty=10000
\clubpenalty=10000
 
 
% Use TeX 3.0's \emergencystretch to help line breaking, but if we're
% Use TeX 3.0's \emergencystretch to help line breaking, but if we're
% using an old version of TeX, don't do anything.  We want the amount of
% using an old version of TeX, don't do anything.  We want the amount of
% stretch added to depend on the line length, hence the dependence on
% stretch added to depend on the line length, hence the dependence on
% \hsize.  This makes it come to about 9pt for the 8.5x11 format.  We
% \hsize.  This makes it come to about 9pt for the 8.5x11 format.  We
% call this whenever the paper size is set.
% call this whenever the paper size is set.
%
%
\def\setemergencystretch{%
\def\setemergencystretch{%
  \ifx\emergencystretch\thisisundefined
  \ifx\emergencystretch\thisisundefined
    % Allow us to assign to \emergencystretch anyway.
    % Allow us to assign to \emergencystretch anyway.
    \def\emergencystretch{\dimen0}%
    \def\emergencystretch{\dimen0}%
  \else
  \else
    \emergencystretch = \hsize
    \emergencystretch = \hsize
    \divide\emergencystretch by 45
    \divide\emergencystretch by 45
  \fi
  \fi
}
}
 
 
% Parameters in order: 1) textheight; 2) textwidth; 3) voffset;
% Parameters in order: 1) textheight; 2) textwidth; 3) voffset;
% 4) hoffset; 5) binding offset; 6) topskip.  Then whoever calls us can
% 4) hoffset; 5) binding offset; 6) topskip.  Then whoever calls us can
% set \parskip and call \setleading for \baselineskip.
% set \parskip and call \setleading for \baselineskip.
%
%
\def\internalpagesizes#1#2#3#4#5#6{%
\def\internalpagesizes#1#2#3#4#5#6{%
  \voffset = #3\relax
  \voffset = #3\relax
  \topskip = #6\relax
  \topskip = #6\relax
  \splittopskip = \topskip
  \splittopskip = \topskip
  %
  %
  \vsize = #1\relax
  \vsize = #1\relax
  \advance\vsize by \topskip
  \advance\vsize by \topskip
  \outervsize = \vsize
  \outervsize = \vsize
  \advance\outervsize by 0.6in
  \advance\outervsize by 0.6in
  \pageheight = \vsize
  \pageheight = \vsize
  %
  %
  \hsize = #2\relax
  \hsize = #2\relax
  \outerhsize = \hsize
  \outerhsize = \hsize
  \advance\outerhsize by 0.5in
  \advance\outerhsize by 0.5in
  \pagewidth = \hsize
  \pagewidth = \hsize
  %
  %
  \normaloffset = #4\relax
  \normaloffset = #4\relax
  \bindingoffset = #5\relax
  \bindingoffset = #5\relax
  %
  %
  \parindent = \defaultparindent
  \parindent = \defaultparindent
  \setemergencystretch
  \setemergencystretch
}
}
 
 
% @letterpaper (the default).
% @letterpaper (the default).
\def\letterpaper{{\globaldefs = 1
\def\letterpaper{{\globaldefs = 1
  \parskip = 3pt plus 2pt minus 1pt
  \parskip = 3pt plus 2pt minus 1pt
  \setleading{13.2pt}%
  \setleading{13.2pt}%
  %
  %
  % If page is nothing but text, make it come out even.
  % If page is nothing but text, make it come out even.
  \internalpagesizes{46\baselineskip}{6in}{\voffset}{.25in}{\bindingoffset}{36pt}%
  \internalpagesizes{46\baselineskip}{6in}{\voffset}{.25in}{\bindingoffset}{36pt}%
}}
}}
 
 
% Use @smallbook to reset parameters for 7x9.5 (or so) format.
% Use @smallbook to reset parameters for 7x9.5 (or so) format.
\def\smallbook{{\globaldefs = 1
\def\smallbook{{\globaldefs = 1
  \parskip = 2pt plus 1pt
  \parskip = 2pt plus 1pt
  \setleading{12pt}%
  \setleading{12pt}%
  %
  %
  \internalpagesizes{7.5in}{5.in}{\voffset}{.25in}{\bindingoffset}{16pt}%
  \internalpagesizes{7.5in}{5.in}{\voffset}{.25in}{\bindingoffset}{16pt}%
  %
  %
  \lispnarrowing = 0.3in
  \lispnarrowing = 0.3in
  \tolerance = 700
  \tolerance = 700
  \hfuzz = 1pt
  \hfuzz = 1pt
  \contentsrightmargin = 0pt
  \contentsrightmargin = 0pt
  \deftypemargin = 0pt
  \deftypemargin = 0pt
  \defbodyindent = .5cm
  \defbodyindent = .5cm
  %
  %
  \let\smalldisplay = \smalldisplayx
  \let\smalldisplay = \smalldisplayx
  \let\smallexample = \smalllispx
  \let\smallexample = \smalllispx
  \let\smallformat = \smallformatx
  \let\smallformat = \smallformatx
  \let\smalllisp = \smalllispx
  \let\smalllisp = \smalllispx
}}
}}
 
 
% Use @afourpaper to print on European A4 paper.
% Use @afourpaper to print on European A4 paper.
\def\afourpaper{{\globaldefs = 1
\def\afourpaper{{\globaldefs = 1
  \setleading{12pt}%
  \setleading{12pt}%
  \parskip = 3pt plus 2pt minus 1pt
  \parskip = 3pt plus 2pt minus 1pt
  %
  %
  \internalpagesizes{53\baselineskip}{160mm}{\voffset}{4mm}{\bindingoffset}{44pt}%
  \internalpagesizes{53\baselineskip}{160mm}{\voffset}{4mm}{\bindingoffset}{44pt}%
  %
  %
  \tolerance = 700
  \tolerance = 700
  \hfuzz = 1pt
  \hfuzz = 1pt
}}
}}
 
 
% A specific text layout, 24x15cm overall, intended for A4 paper.  Top margin
% A specific text layout, 24x15cm overall, intended for A4 paper.  Top margin
% 29mm, hence bottom margin 28mm, nominal side margin 3cm.
% 29mm, hence bottom margin 28mm, nominal side margin 3cm.
\def\afourlatex{{\globaldefs = 1
\def\afourlatex{{\globaldefs = 1
  \setleading{13.6pt}%
  \setleading{13.6pt}%
  %
  %
  \afourpaper
  \afourpaper
  \internalpagesizes{237mm}{150mm}{3.6mm}{3.6mm}{3mm}{7mm}%
  \internalpagesizes{237mm}{150mm}{3.6mm}{3.6mm}{3mm}{7mm}%
  %
  %
  \globaldefs = 0
  \globaldefs = 0
}}
}}
 
 
% Use @afourwide to print on European A4 paper in wide format.
% Use @afourwide to print on European A4 paper in wide format.
\def\afourwide{%
\def\afourwide{%
  \afourpaper
  \afourpaper
  \internalpagesizes{9.5in}{6.5in}{\hoffset}{\normaloffset}{\bindingoffset}{7mm}%
  \internalpagesizes{9.5in}{6.5in}{\hoffset}{\normaloffset}{\bindingoffset}{7mm}%
  %
  %
  \globaldefs = 0
  \globaldefs = 0
}
}
 
 
% @pagesizes TEXTHEIGHT[,TEXTWIDTH]
% @pagesizes TEXTHEIGHT[,TEXTWIDTH]
% Perhaps we should allow setting the margins, \topskip, \parskip,
% Perhaps we should allow setting the margins, \topskip, \parskip,
% and/or leading, also. Or perhaps we should compute them somehow.
% and/or leading, also. Or perhaps we should compute them somehow.
%
%
\def\pagesizes{\parsearg\pagesizesxxx}
\def\pagesizes{\parsearg\pagesizesxxx}
\def\pagesizesxxx#1{\pagesizesyyy #1,,\finish}
\def\pagesizesxxx#1{\pagesizesyyy #1,,\finish}
\def\pagesizesyyy#1,#2,#3\finish{{%
\def\pagesizesyyy#1,#2,#3\finish{{%
  \setbox0 = \hbox{\ignorespaces #2}\ifdim\wd0 > 0pt \hsize=#2\relax \fi
  \setbox0 = \hbox{\ignorespaces #2}\ifdim\wd0 > 0pt \hsize=#2\relax \fi
  \globaldefs = 1
  \globaldefs = 1
  %
  %
  \parskip = 3pt plus 2pt minus 1pt
  \parskip = 3pt plus 2pt minus 1pt
  \setleading{13.2pt}%
  \setleading{13.2pt}%
  %
  %
  \internalpagesizes{#1}{\hsize}{\voffset}{\normaloffset}{\bindingoffset}{44pt}%
  \internalpagesizes{#1}{\hsize}{\voffset}{\normaloffset}{\bindingoffset}{44pt}%
}}
}}
 
 
% Set default to letter.
% Set default to letter.
%
%
\letterpaper
\letterpaper
 
 
\message{and turning on texinfo input format.}
\message{and turning on texinfo input format.}
 
 
% Define macros to output various characters with catcode for normal text.
% Define macros to output various characters with catcode for normal text.
\catcode`\"=\other
\catcode`\"=\other
\catcode`\~=\other
\catcode`\~=\other
\catcode`\^=\other
\catcode`\^=\other
\catcode`\_=\other
\catcode`\_=\other
\catcode`\|=\other
\catcode`\|=\other
\catcode`\<=\other
\catcode`\<=\other
\catcode`\>=\other
\catcode`\>=\other
\catcode`\+=\other
\catcode`\+=\other
\def\normaldoublequote{"}
\def\normaldoublequote{"}
\def\normaltilde{~}
\def\normaltilde{~}
\def\normalcaret{^}
\def\normalcaret{^}
\def\normalunderscore{_}
\def\normalunderscore{_}
\def\normalverticalbar{|}
\def\normalverticalbar{|}
\def\normalless{<}
\def\normalless{<}
\def\normalgreater{>}
\def\normalgreater{>}
\def\normalplus{+}
\def\normalplus{+}
 
 
% This macro is used to make a character print one way in ttfont
% This macro is used to make a character print one way in ttfont
% where it can probably just be output, and another way in other fonts,
% where it can probably just be output, and another way in other fonts,
% where something hairier probably needs to be done.
% where something hairier probably needs to be done.
%
%
% #1 is what to print if we are indeed using \tt; #2 is what to print
% #1 is what to print if we are indeed using \tt; #2 is what to print
% otherwise.  Since all the Computer Modern typewriter fonts have zero
% otherwise.  Since all the Computer Modern typewriter fonts have zero
% interword stretch (and shrink), and it is reasonable to expect all
% interword stretch (and shrink), and it is reasonable to expect all
% typewriter fonts to have this, we can check that font parameter.
% typewriter fonts to have this, we can check that font parameter.
%
%
\def\ifusingtt#1#2{\ifdim \fontdimen3\the\font=0pt #1\else #2\fi}
\def\ifusingtt#1#2{\ifdim \fontdimen3\the\font=0pt #1\else #2\fi}
 
 
% Turn off all special characters except @
% Turn off all special characters except @
% (and those which the user can use as if they were ordinary).
% (and those which the user can use as if they were ordinary).
% Most of these we simply print from the \tt font, but for some, we can
% Most of these we simply print from the \tt font, but for some, we can
% use math or other variants that look better in normal text.
% use math or other variants that look better in normal text.
 
 
\catcode`\"=\active
\catcode`\"=\active
\def\activedoublequote{{\tt\char34}}
\def\activedoublequote{{\tt\char34}}
\let"=\activedoublequote
\let"=\activedoublequote
\catcode`\~=\active
\catcode`\~=\active
\def~{{\tt\char126}}
\def~{{\tt\char126}}
\chardef\hat=`\^
\chardef\hat=`\^
\catcode`\^=\active
\catcode`\^=\active
\def^{{\tt \hat}}
\def^{{\tt \hat}}
 
 
\catcode`\_=\active
\catcode`\_=\active
\def_{\ifusingtt\normalunderscore\_}
\def_{\ifusingtt\normalunderscore\_}
% Subroutine for the previous macro.
% Subroutine for the previous macro.
\def\_{\leavevmode \kern.06em \vbox{\hrule width.3em height.1ex}}
\def\_{\leavevmode \kern.06em \vbox{\hrule width.3em height.1ex}}
 
 
\catcode`\|=\active
\catcode`\|=\active
\def|{{\tt\char124}}
\def|{{\tt\char124}}
\chardef \less=`\<
\chardef \less=`\<
\catcode`\<=\active
\catcode`\<=\active
\def<{{\tt \less}}
\def<{{\tt \less}}
\chardef \gtr=`\>
\chardef \gtr=`\>
\catcode`\>=\active
\catcode`\>=\active
\def>{{\tt \gtr}}
\def>{{\tt \gtr}}
\catcode`\+=\active
\catcode`\+=\active
\def+{{\tt \char 43}}
\def+{{\tt \char 43}}
%\catcode 27=\active
%\catcode 27=\active
%\def^^[{$\diamondsuit$}
%\def^^[{$\diamondsuit$}
 
 
% Set up an active definition for =, but don't enable it most of the time.
% Set up an active definition for =, but don't enable it most of the time.
{\catcode`\==\active
{\catcode`\==\active
\global\def={{\tt \char 61}}}
\global\def={{\tt \char 61}}}
 
 
\catcode`+=\active
\catcode`+=\active
\catcode`\_=\active
\catcode`\_=\active
 
 
% If a .fmt file is being used, characters that might appear in a file
% If a .fmt file is being used, characters that might appear in a file
% name cannot be active until we have parsed the command line.
% name cannot be active until we have parsed the command line.
% So turn them off again, and have \everyjob (or @setfilename) turn them on.
% So turn them off again, and have \everyjob (or @setfilename) turn them on.
% \otherifyactive is called near the end of this file.
% \otherifyactive is called near the end of this file.
\def\otherifyactive{\catcode`+=\other \catcode`\_=\other}
\def\otherifyactive{\catcode`+=\other \catcode`\_=\other}
 
 
\catcode`\@=0
\catcode`\@=0
 
 
% \rawbackslashxx output one backslash character in current font
% \rawbackslashxx output one backslash character in current font
\global\chardef\rawbackslashxx=`\\
\global\chardef\rawbackslashxx=`\\
%{\catcode`\\=\other
%{\catcode`\\=\other
%@gdef@rawbackslashxx{\}}
%@gdef@rawbackslashxx{\}}
 
 
% \rawbackslash redefines \ as input to do \rawbackslashxx.
% \rawbackslash redefines \ as input to do \rawbackslashxx.
{\catcode`\\=\active
{\catcode`\\=\active
@gdef@rawbackslash{@let\=@rawbackslashxx }}
@gdef@rawbackslash{@let\=@rawbackslashxx }}
 
 
% \normalbackslash outputs one backslash in fixed width font.
% \normalbackslash outputs one backslash in fixed width font.
\def\normalbackslash{{\tt\rawbackslashxx}}
\def\normalbackslash{{\tt\rawbackslashxx}}
 
 
% Say @foo, not \foo, in error messages.
% Say @foo, not \foo, in error messages.
\escapechar=`\@
\escapechar=`\@
 
 
% \catcode 17=0   % Define control-q
% \catcode 17=0   % Define control-q
\catcode`\\=\active
\catcode`\\=\active
 
 
% Used sometimes to turn off (effectively) the active characters
% Used sometimes to turn off (effectively) the active characters
% even after parsing them.
% even after parsing them.
@def@turnoffactive{@let"=@normaldoublequote
@def@turnoffactive{@let"=@normaldoublequote
@let\=@realbackslash
@let\=@realbackslash
@let~=@normaltilde
@let~=@normaltilde
@let^=@normalcaret
@let^=@normalcaret
@let_=@normalunderscore
@let_=@normalunderscore
@let|=@normalverticalbar
@let|=@normalverticalbar
@let<=@normalless
@let<=@normalless
@let>=@normalgreater
@let>=@normalgreater
@let+=@normalplus}
@let+=@normalplus}
 
 
@def@normalturnoffactive{@let"=@normaldoublequote
@def@normalturnoffactive{@let"=@normaldoublequote
@let\=@normalbackslash
@let\=@normalbackslash
@let~=@normaltilde
@let~=@normaltilde
@let^=@normalcaret
@let^=@normalcaret
@let_=@normalunderscore
@let_=@normalunderscore
@let|=@normalverticalbar
@let|=@normalverticalbar
@let<=@normalless
@let<=@normalless
@let>=@normalgreater
@let>=@normalgreater
@let+=@normalplus}
@let+=@normalplus}
 
 
% Make _ and + \other characters, temporarily.
% Make _ and + \other characters, temporarily.
% This is canceled by @fixbackslash.
% This is canceled by @fixbackslash.
@otherifyactive
@otherifyactive
 
 
% If a .fmt file is being used, we don't want the `\input texinfo' to show up.
% If a .fmt file is being used, we don't want the `\input texinfo' to show up.
% That is what \eatinput is for; after that, the `\' should revert to printing
% That is what \eatinput is for; after that, the `\' should revert to printing
% a backslash.
% a backslash.
%
%
@gdef@eatinput input texinfo{@fixbackslash}
@gdef@eatinput input texinfo{@fixbackslash}
@global@let\ = @eatinput
@global@let\ = @eatinput
 
 
% On the other hand, perhaps the file did not have a `\input texinfo'. Then
% On the other hand, perhaps the file did not have a `\input texinfo'. Then
% the first `\{ in the file would cause an error. This macro tries to fix
% the first `\{ in the file would cause an error. This macro tries to fix
% that, assuming it is called before the first `\' could plausibly occur.
% that, assuming it is called before the first `\' could plausibly occur.
% Also back turn on active characters that might appear in the input
% Also back turn on active characters that might appear in the input
% file name, in case not using a pre-dumped format.
% file name, in case not using a pre-dumped format.
%
%
@gdef@fixbackslash{@ifx\@eatinput @let\ = @normalbackslash @fi
@gdef@fixbackslash{@ifx\@eatinput @let\ = @normalbackslash @fi
  @catcode`+=@active @catcode`@_=@active}
  @catcode`+=@active @catcode`@_=@active}
 
 
% These look ok in all fonts, so just make them not special.  The @rm below
% These look ok in all fonts, so just make them not special.  The @rm below
% makes sure that the current font starts out as the newly loaded cmr10
% makes sure that the current font starts out as the newly loaded cmr10
@catcode`@$=@other @catcode`@%=@other @catcode`@&=@other @catcode`@#=@other
@catcode`@$=@other @catcode`@%=@other @catcode`@&=@other @catcode`@#=@other
 
 
@textfonts
@textfonts
@rm
@rm
 
 
@c Local variables:
@c Local variables:
@c page-delimiter: "^\\\\message"
@c page-delimiter: "^\\\\message"
@c End:
@c End:
 
 

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