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\documentclass[11pt]{article}
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\title{GNU GENERAL PUBLIC LICENSE}
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\date{Version 3, 29 June 2007}
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\begin{document}
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\maketitle
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\begin{center}
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{\parindent 0in
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Copyright \copyright\  2007 Free Software Foundation, Inc. \texttt{http://fsf.org/}
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\bigskip
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Everyone is permitted to copy and distribute verbatim copies of this
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license document, but changing it is not allowed.}
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\end{center}
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\renewcommand{\abstractname}{Preamble}
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\begin{abstract}
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The GNU General Public License is a free, copyleft license for
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software and other kinds of works.
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The licenses for most software and other practical works are designed
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to take away your freedom to share and change the works.  By contrast,
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the GNU General Public License is intended to guarantee your freedom to
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share and change all versions of a program--to make sure it remains free
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software for all its users.  We, the Free Software Foundation, use the
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GNU General Public License for most of our software; it applies also to
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any other work released this way by its authors.  You can apply it to
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your programs, too.
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When we speak of free software, we are referring to freedom, not
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price.  Our General Public Licenses are designed to make sure that you
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have the freedom to distribute copies of free software (and charge for
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them if you wish), that you receive source code or can get it if you
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want it, that you can change the software or use pieces of it in new
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free programs, and that you know you can do these things.
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42
To protect your rights, we need to prevent others from denying you
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these rights or asking you to surrender the rights.  Therefore, you have
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certain responsibilities if you distribute copies of the software, or if
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you modify it: responsibilities to respect the freedom of others.
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For example, if you distribute copies of such a program, whether
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gratis or for a fee, you must pass on to the recipients the same
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freedoms that you received.  You must make sure that they, too, receive
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or can get the source code.  And you must show them these terms so they
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know their rights.
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Developers that use the GNU GPL protect your rights with two steps:
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(1) assert copyright on the software, and (2) offer you this License
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giving you legal permission to copy, distribute and/or modify it.
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57
For the developers' and authors' protection, the GPL clearly explains
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that there is no warranty for this free software.  For both users' and
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authors' sake, the GPL requires that modified versions be marked as
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changed, so that their problems will not be attributed erroneously to
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authors of previous versions.
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Some devices are designed to deny users access to install or run
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modified versions of the software inside them, although the manufacturer
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can do so.  This is fundamentally incompatible with the aim of
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protecting users' freedom to change the software.  The systematic
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pattern of such abuse occurs in the area of products for individuals to
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use, which is precisely where it is most unacceptable.  Therefore, we
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have designed this version of the GPL to prohibit the practice for those
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products.  If such problems arise substantially in other domains, we
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stand ready to extend this provision to those domains in future versions
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of the GPL, as needed to protect the freedom of users.
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Finally, every program is threatened constantly by software patents.
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States should not allow patents to restrict development and use of
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software on general-purpose computers, but in those that do, we wish to
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avoid the special danger that patents applied to a free program could
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make it effectively proprietary.  To prevent this, the GPL assures that
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patents cannot be used to render the program non-free.
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The precise terms and conditions for copying, distribution and
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modification follow.
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\end{abstract}
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\begin{center}
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{\Large \sc Terms and Conditions}
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\end{center}
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89
 
90
\begin{enumerate}
91
 
92
\addtocounter{enumi}{-1}
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94
\item Definitions.
95
 
96
``This License'' refers to version 3 of the GNU General Public License.
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98
``Copyright'' also means copyright-like laws that apply to other kinds of
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works, such as semiconductor masks.
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``The Program'' refers to any copyrightable work licensed under this
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License.  Each licensee is addressed as ``you''.  ``Licensees'' and
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``recipients'' may be individuals or organizations.
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To ``modify'' a work means to copy from or adapt all or part of the work
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exact copy.  The resulting work is called a ``modified version'' of the
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earlier work or a work ``based on'' the earlier work.
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A ``covered work'' means either the unmodified Program or a work based
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on the Program.
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To ``propagate'' a work means to do anything with it that, without
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permission, would make you directly or secondarily liable for
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infringement under applicable copyright law, except executing it on a
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computer or modifying a private copy.  Propagation includes copying,
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distribution (with or without modification), making available to the
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public, and in some countries other activities as well.
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To ``convey'' a work means any kind of propagation that enables other
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An interactive user interface displays ``Appropriate Legal Notices''
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\item Source Code.
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A ``Standard Interface'' means an interface that either is an official
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The ``System Libraries'' of an executable work include anything, other
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The ``Corresponding Source'' for a work in object code form means all
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172
The Corresponding Source for a work in source code form is that
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\item Basic Permissions.
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All rights granted under this License are granted for the term of
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You may make, run and propagate covered works that you do not
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Conveying under any other circumstances is permitted solely under
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\item Protecting Users' Legal Rights From Anti-Circumvention Law.
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No covered work shall be deemed part of an effective technological
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When you convey a covered work, you waive any legal power to forbid
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\item Conveying Verbatim Copies.
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You may convey verbatim copies of the Program's source code as you
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receive it, in any medium, provided that you conspicuously and
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keep intact all notices stating that this License and any
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non-permissive terms added in accord with section 7 apply to the code;
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keep intact all notices of the absence of any warranty; and give all
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recipients a copy of this License along with the Program.
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You may charge any price or no price for each copy that you convey,
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You may convey a work based on the Program, or the modifications to
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produce it from the Program, in the form of source code under the
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terms of section 4, provided that you also meet all of these conditions:
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  \begin{enumerate}
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  \item The work must carry prominent notices stating that you modified
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  \item The work must carry prominent notices stating that it is
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  Appropriate Legal Notices; however, if the Program has interactive
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  work need not make them do so.
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\end{enumerate}
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A compilation of a covered work with other separate and independent
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beyond what the individual works permit.  Inclusion of a covered work
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parts of the aggregate.
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\item Conveying Non-Source Forms.
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You may convey a covered work in object code form under the terms
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of sections 4 and 5, provided that you also convey the
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machine-readable Corresponding Source under the terms of this License,
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in one of these ways:
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  \begin{enumerate}
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  \item Convey the object code in, or embodied in, a physical product
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  customarily used for software interchange.
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  \item Convey the object code in, or embodied in, a physical product
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  conveying of source, or (2) access to copy the
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  \item Convey individual copies of the object code with a copy of the
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  \item Convey the object code by offering access from a designated
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  \item Convey the object code using peer-to-peer transmission, provided
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  Source of the work are being offered to the general public at no
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  \end{enumerate}
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A separable portion of the object code, whose source code is excluded
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A ``User Product'' is either (1) a ``consumer product'', which means any
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If you convey an object code work under this section in, or with, or
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Corresponding Source conveyed, and Installation Information provided,
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\item Additional Terms.
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``Additional permissions'' are terms that supplement the terms of this
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When you convey a copy of a covered work, you may at your option
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409
  \end{enumerate}
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the above requirements apply either way.
429
 
430
\item Termination.
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432
You may not propagate or modify a covered work except as expressly
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438
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445
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Termination of your rights under this section does not terminate the
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458
\item Acceptance Not Required for Having Copies.
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You are not required to accept this License in order to receive or
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469
\item Automatic Licensing of Downstream Recipients.
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471
Each time you convey a covered work, the recipient automatically
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473
propagate that work, subject to this License.  You are not responsible
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486
You may not impose any further restrictions on the exercise of the
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494
\item Patents.
495
 
496
A ``contributor'' is a copyright holder who authorizes use under this
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500
A contributor's ``essential patent claims'' are all patent claims
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505
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this License.
509
 
510
Each contributor grants you a non-exclusive, worldwide, royalty-free
511
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In the following three paragraphs, a ``patent license'' is any express
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522
If you convey a covered work, knowingly relying on a patent license,
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536
If, pursuant to or in connection with a single transaction or
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540
or convey a specific copy of the covered work, then the patent license
541
you grant is automatically extended to all recipients of the covered
542
work and works based on it.
543
 
544
A patent license is ``discriminatory'' if it does not include within
545
the scope of its coverage, prohibits the exercise of, or is
546
conditioned on the non-exercise of one or more of the rights that are
547
specifically granted under this License.  You may not convey a covered
548
work if you are a party to an arrangement with a third party that is
549
in the business of distributing software, under which you make payment
550
to the third party based on the extent of your activity of conveying
551
the work, and under which the third party grants, to any of the
552
parties who would receive the covered work from you, a discriminatory
553
patent license (a) in connection with copies of the covered work
554
conveyed by you (or copies made from those copies), or (b) primarily
555
for and in connection with specific products or compilations that
556
contain the covered work, unless you entered into that arrangement,
557
or that patent license was granted, prior to 28 March 2007.
558
 
559
Nothing in this License shall be construed as excluding or limiting
560
any implied license or other defenses to infringement that may
561
otherwise be available to you under applicable patent law.
562
 
563
\item No Surrender of Others' Freedom.
564
 
565
If conditions are imposed on you (whether by court order, agreement or
566
otherwise) that contradict the conditions of this License, they do not
567
excuse you from the conditions of this License.  If you cannot convey a
568
covered work so as to satisfy simultaneously your obligations under this
569
License and any other pertinent obligations, then as a consequence you may
570
not convey it at all.  For example, if you agree to terms that obligate you
571
to collect a royalty for further conveying from those to whom you convey
572
the Program, the only way you could satisfy both those terms and this
573
License would be to refrain entirely from conveying the Program.
574
 
575
\item Use with the GNU Affero General Public License.
576
 
577
Notwithstanding any other provision of this License, you have
578
permission to link or combine any covered work with a work licensed
579
under version 3 of the GNU Affero General Public License into a single
580
combined work, and to convey the resulting work.  The terms of this
581
License will continue to apply to the part which is the covered work,
582
but the special requirements of the GNU Affero General Public License,
583
section 13, concerning interaction through a network will apply to the
584
combination as such.
585
 
586
\item Revised Versions of this License.
587
 
588
The Free Software Foundation may publish revised and/or new versions of
589
the GNU General Public License from time to time.  Such new versions will
590
be similar in spirit to the present version, but may differ in detail to
591
address new problems or concerns.
592
 
593
Each version is given a distinguishing version number.  If the
594
Program specifies that a certain numbered version of the GNU General
595
Public License ``or any later version'' applies to it, you have the
596
option of following the terms and conditions either of that numbered
597
version or of any later version published by the Free Software
598
Foundation.  If the Program does not specify a version number of the
599
GNU General Public License, you may choose any version ever published
600
by the Free Software Foundation.
601
 
602
If the Program specifies that a proxy can decide which future
603
versions of the GNU General Public License can be used, that proxy's
604
public statement of acceptance of a version permanently authorizes you
605
to choose that version for the Program.
606
 
607
Later license versions may give you additional or different
608
permissions.  However, no additional obligations are imposed on any
609
author or copyright holder as a result of your choosing to follow a
610
later version.
611
 
612
\item Disclaimer of Warranty.
613
 
614
\begin{sloppypar}
615
 THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
616
 APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE
617
 COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM ``AS IS''
618
 WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED,
619
 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
620
 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE
621
 RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.
622
 SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL
623
 NECESSARY SERVICING, REPAIR OR CORRECTION.
624
\end{sloppypar}
625
 
626
\item Limitation of Liability.
627
 
628
 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
629
 WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES
630
 AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR
631
 DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL
632
 DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM
633
 (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED
634
 INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE
635
 OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH
636
 HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
637
 DAMAGES.
638
 
639
\item Interpretation of Sections 15 and 16.
640
 
641
If the disclaimer of warranty and limitation of liability provided
642
above cannot be given local legal effect according to their terms,
643
reviewing courts shall apply local law that most closely approximates
644
an absolute waiver of all civil liability in connection with the
645
Program, unless a warranty or assumption of liability accompanies a
646
copy of the Program in return for a fee.
647
 
648
\begin{center}
649
{\Large\sc End of Terms and Conditions}
650
 
651
\bigskip
652
How to Apply These Terms to Your New Programs
653
\end{center}
654
 
655
If you develop a new program, and you want it to be of the greatest
656
possible use to the public, the best way to achieve this is to make it
657
free software which everyone can redistribute and change under these terms.
658
 
659
To do so, attach the following notices to the program.  It is safest
660
to attach them to the start of each source file to most effectively
661
state the exclusion of warranty; and each file should have at least
662
the ``copyright'' line and a pointer to where the full notice is found.
663
 
664
{\footnotesize
665
\begin{verbatim}
666
<one line to give the program's name and a brief idea of what it does.>
667
 
668
Copyright (C) <textyear>  <name of author>
669
 
670
This program is free software: you can redistribute it and/or modify
671
it under the terms of the GNU General Public License as published by
672
the Free Software Foundation, either version 3 of the License, or
673
(at your option) any later version.
674
 
675
This program is distributed in the hope that it will be useful,
676
but WITHOUT ANY WARRANTY; without even the implied warranty of
677
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
678
GNU General Public License for more details.
679
 
680
You should have received a copy of the GNU General Public License
681
along with this program.  If not, see <http://www.gnu.org/licenses/>.
682
\end{verbatim}
683
}
684
 
685
Also add information on how to contact you by electronic and paper mail.
686
 
687
If the program does terminal interaction, make it output a short
688
notice like this when it starts in an interactive mode:
689
 
690
{\footnotesize
691
\begin{verbatim}
692
<program>  Copyright (C) <year>  <name of author>
693
 
694
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
695
This is free software, and you are welcome to redistribute it
696
under certain conditions; type `show c' for details.
697
\end{verbatim}
698
}
699
 
700
The hypothetical commands {\tt show w} and {\tt show c} should show
701
the appropriate
702
parts of the General Public License.  Of course, your program's commands
703
might be different; for a GUI interface, you would use an ``about box''.
704
 
705
You should also get your employer (if you work as a programmer) or
706
school, if any, to sign a ``copyright disclaimer'' for the program, if
707
necessary.  For more information on this, and how to apply and follow
708
the GNU GPL, see \texttt{http://www.gnu.org/licenses/}.
709
 
710
The GNU General Public License does not permit incorporating your
711
program into proprietary programs.  If your program is a subroutine
712
library, you may consider it more useful to permit linking proprietary
713
applications with the library.  If this is what you want to do, use
714
the GNU Lesser General Public License instead of this License.  But
715
first, please read \texttt{http://www.gnu.org/philosophy/why-not-lgpl.html}.
716
 
717
\end{enumerate}
718
 
719
\end{document}

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