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><H1
><A
NAME="REF.DEFAULT-VALUE"><SPAN
CLASS="PROPERTY"
>default_value</SPAN
></H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN3887"
></A
><H2
>Name</H2
>Property <SPAN
CLASS="PROPERTY"
>default_value</SPAN
>&nbsp;--&nbsp;Provide a default value for this option using a CDL expression.</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN3891"><H2
>Synopsis</H2
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SYNOPSIS"
>cdl_option &lt;name&gt; {
    default_value &lt;expression&gt;
    &#8230;
}</PRE
></TD
></TR
></TABLE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN3893"
></A
><H2
>Description</H2
><P
>The <SPAN
CLASS="PROPERTY"
>default_value</SPAN
> property allows the initial value of a
configuration option to depend on other configuration options. The
arguments to the property should be a <SPAN
CLASS="APPLICATION"
>CDL</SPAN
> expression, see
<A
HREF="language.values.html#LANGUAGE.EXPRESSION"
>the Section called <I
>Ordinary Expressions</I
> in Chapter 3</A
> for the syntactic details.
In many cases a simple constant value will suffice, for example:</P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>cdl_component CYGPKG_KERNEL_EXCEPTIONS {
    &#8230;
    default_value 1
 
    cdl_option CYGSEM_KERNEL_EXCEPTIONS_DECODE {
        &#8230;
        default_value 0
    }
}</PRE
></TD
></TR
></TABLE
><P
>However it is also possible for an option's default value to depend on
other options. For example the common HAL package provides some
support functions that are needed by the <SPAN
CLASS="APPLICATION"
>eCos</SPAN
> kernel, but are
unlikely to be useful if the kernel is not being used. This
relationship can be expressed using:</P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>cdl_option CYGFUN_HAL_COMMON_KERNEL_SUPPORT {
    ...
    default_value CYGPKG_KERNEL
}</PRE
></TD
></TR
></TABLE
><P
>If the kernel is loaded then this HAL option is automatically enabled,
although the user can still disable it explicitly should this prove
necessary. If the kernel is not loaded then the option is disabled,
although it can still be enabled by the user if desired.
<SPAN
CLASS="PROPERTY"
>default_value</SPAN
> expressions can be more complicated than this if
appropriate, and provide a very powerful facility for component
writers who want their code to &#8220;just do the right thing&#8221;
in a wide variety of configurations.</P
><P
>The <SPAN
CLASS="APPLICATION"
>CDL</SPAN
> configuration system evaluates the <SPAN
CLASS="PROPERTY"
>default_value</SPAN
>
expression when the current package is loaded and whenever there is a
change to any other option referenced in the expression. The result
depends on the option's flavor:</P
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
><TT
CLASS="LITERAL"
>flavor none</TT
></DT
><DD
><P
>Options with this flavor have no value, so the <SPAN
CLASS="PROPERTY"
>default_value</SPAN
>
property is not applicable.</P
></DD
><DT
><TT
CLASS="LITERAL"
>flavor bool</TT
></DT
><DD
><P
>If the expression evaluates to a non-zero result the option is
enabled by default, otherwise it is disabled.</P
></DD
><DT
><TT
CLASS="LITERAL"
>flavor booldata</TT
></DT
><DD
><P
>If the result of evaluating the expression is zero then the option is
disabled, otherwise the option is enabled and its value is the result.</P
></DD
><DT
><TT
CLASS="LITERAL"
>flavor data</TT
></DT
><DD
><P
>The default value of the option is the result of evaluating the
expression.</P
></DD
></DL
></DIV
><P
>A <TT
CLASS="LITERAL"
>cdl_option</TT
> or other entity can have at most one <SPAN
CLASS="PROPERTY"
>default_value</SPAN
>
property, and it is illegal to have both a <SPAN
CLASS="PROPERTY"
>calculated</SPAN
> and a
<SPAN
CLASS="PROPERTY"
>default_value</SPAN
> property in one body. If an option does not have
either a <SPAN
CLASS="PROPERTY"
>default_value</SPAN
> or a <SPAN
CLASS="PROPERTY"
>calculated</SPAN
> property and it does not
have the flavor <TT
CLASS="LITERAL"
>none</TT
> then the configuration tools
will assume a default value expression of <TT
CLASS="LITERAL"
>0</TT
>.</P
><P
>On occasion it is useful to have a configuration option
<TT
CLASS="LITERAL"
>A</TT
> which has both a <SPAN
CLASS="PROPERTY"
>requires</SPAN
> constraint on some
other option <TT
CLASS="LITERAL"
>B</TT
> and a <SPAN
CLASS="PROPERTY"
>default_value</SPAN
> expression of
<TT
CLASS="LITERAL"
>B</TT
>. If option <TT
CLASS="LITERAL"
>B</TT
> is not enabled
then <TT
CLASS="LITERAL"
>A</TT
> will also be disabled by default and no
conflict arises. If <TT
CLASS="LITERAL"
>B</TT
> is enabled then
<TT
CLASS="LITERAL"
>A</TT
> also becomes enabled and again no conflict
arises. If a user attempts to enable <TT
CLASS="LITERAL"
>B</TT
> but not
<TT
CLASS="LITERAL"
>A</TT
> then there will be a conflict. Users should be
able to deduce that the two options are closely interlinked and should
not be manipulated independently except in very unusual circumstances.</P
><DIV
CLASS="TIP"
><BLOCKQUOTE
CLASS="TIP"
><P
><B
>Tip: </B
>If the first entry in a <SPAN
CLASS="PROPERTY"
>default_value</SPAN
> expression is a negative
number, for example <TT
CLASS="LITERAL"
>default_value&nbsp;-1</TT
> then this
can be misinterpreted as an option instead of as part of the
expression. Currently the <SPAN
CLASS="PROPERTY"
>default_value</SPAN
> property does not take any
options, but this may change in future. Option processing halts at the
sequence <TT
CLASS="LITERAL"
>--</TT
>, so the desired value can be expressed
safely using
<TT
CLASS="LITERAL"
>default_value&nbsp;--&nbsp;-1</TT
></P
></BLOCKQUOTE
></DIV
><DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>Note: </B
>In many cases it would be useful to calculate default values using
some global preferences, for example:</P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>cdl_option CYGIMP_LIBC_STRING_PREFER_SMALL_TO_FAST {
    &#8230;
    default_value CYGGLO_CODESIZE &#62; CYGGLO_SPEED
}</PRE
></TD
></TR
></TABLE
><P
>Such global preference options do not yet exist, but are likely to be
added in a future version.</P
></BLOCKQUOTE
></DIV
><DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>Note: </B
>For options with the booldata flavor the current syntax does not allow
the default values of the enabled flag and the value to be controlled
separately. Functionality to permit this may be added in a future
release.</P
></BLOCKQUOTE
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN3964"
></A
><H2
>Example</H2
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>cdl_option CYGDBG_HAL_DEBUG_GDB_THREAD_SUPPORT {
    display       "Include GDB multi-threading debug support"
    requires      CYGDBG_KERNEL_DEBUG_GDB_THREAD_SUPPORT
    default_value CYGDBG_KERNEL_DEBUG_GDB_THREAD_SUPPORT
    description   "
        This option enables some extra HAL code which is needed
        to support multi-threaded source level debugging."
}</PRE
></TD
></TR
></TABLE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN3967"
></A
><H2
>See Also</H2
><P
>Properties <A
HREF="ref.calculated.html"
><SPAN
CLASS="PROPERTY"
>calculated</SPAN
></A
>,
<A
HREF="ref.flavor.html"
><SPAN
CLASS="PROPERTY"
>flavor</SPAN
></A
> and
<A
HREF="ref.legal-values.html"
><SPAN
CLASS="PROPERTY"
>legal_values</SPAN
></A
>.</P
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Line No.	Rev	Author	Line
1	28	unneback	`<!-- Copyright (C) 2003 Red Hat, Inc. -->`
2			`<!-- This material may be distributed only subject to the terms -->`
3			`<!-- and conditions set forth in the Open Publication License, v1.0 -->`
4			`<!-- or later (the latest version is presently available at -->`
5			`<!-- http://www.opencontent.org/openpub/). -->`
6			`<!-- Distribution of the work or derivative of the work in any -->`
7			`<!-- standard (paper) book form is prohibited unless prior -->`
8			`<!-- permission is obtained from the copyright holder. -->`
9			`<HTML`
10			`><HEAD`
11			`><TITLE`
12			`>default_value</TITLE`
13			`><meta name="MSSmartTagsPreventParsing" content="TRUE">`
14			`<META`
15			`NAME="GENERATOR"`
16			`CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+`
17			`"><LINK`
18			`REL="HOME"`
19			`TITLE="The eCos Component Writer's Guide"`
20			`HREF="cdl-guide.html"><LINK`
21			`REL="UP"`
22			`TITLE="CDL Language Specification"`
23			`HREF="reference.html"><LINK`
24			`REL="PREVIOUS"`
25			`TITLE="compile"`
26			`HREF="ref.compile.html"><LINK`
27			`REL="NEXT"`
28			`TITLE="define"`
29			`HREF="ref.define.html"></HEAD`
30			`><BODY`
31			`CLASS="REFENTRY"`
32			`BGCOLOR="#FFFFFF"`
33			`TEXT="#000000"`
34			`LINK="#0000FF"`
35			`VLINK="#840084"`
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37			`><DIV`
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39			`><TABLE`
40			`SUMMARY="Header navigation table"`
41			`WIDTH="100%"`
42			`BORDER="0"`
43			`CELLPADDING="0"`
44			`CELLSPACING="0"`
45			`><TR`
46			`><TH`
47			`COLSPAN="3"`
48			`ALIGN="center"`
49			`>The <SPAN`
50			`CLASS="APPLICATION"`
51			`>eCos</SPAN`
52			`> Component Writer's Guide</TH`
53			`></TR`
54			`><TR`
55			`><TD`
56			`WIDTH="10%"`
57			`ALIGN="left"`
58			`VALIGN="bottom"`
59			`><A`
60			`HREF="ref.compile.html"`
61			`ACCESSKEY="P"`
62			`>Prev</A`
63			`></TD`
64			`><TD`
65			`WIDTH="80%"`
66			`ALIGN="center"`
67			`VALIGN="bottom"`
68			`></TD`
69			`><TD`
70			`WIDTH="10%"`
71			`ALIGN="right"`
72			`VALIGN="bottom"`
73			`><A`
74			`HREF="ref.define.html"`
75			`ACCESSKEY="N"`
76			`>Next</A`
77			`></TD`
78			`></TR`
79			`></TABLE`
80			`><HR`
81			`ALIGN="LEFT"`
82			`WIDTH="100%"></DIV`
83			`><H1`
84			`><A`
85			`NAME="REF.DEFAULT-VALUE"><SPAN`
86			`CLASS="PROPERTY"`
87			`>default_value</SPAN`
88			`></H1`
89			`><DIV`
90			`CLASS="REFNAMEDIV"`
91			`><A`
92			`NAME="AEN3887"`
93			`></A`
94			`><H2`
95			`>Name</H2`
96			`>Property <SPAN`
97			`CLASS="PROPERTY"`
98			`>default_value</SPAN`
99			`> -- Provide a default value for this option using a CDL expression.</DIV`
100			`><DIV`
101			`CLASS="REFSYNOPSISDIV"`
102			`><A`
103			`NAME="AEN3891"><H2`
104			`>Synopsis</H2`
105			`><TABLE`
106			`BORDER="5"`
107			`BGCOLOR="#E0E0F0"`
108			`WIDTH="70%"`
109			`><TR`
110			`><TD`
111			`><PRE`
112			`CLASS="SYNOPSIS"`
113			`>cdl_option <name> {`
114			`default_value <expression>`
115			`…`
116			`}</PRE`
117			`></TD`
118			`></TR`
119			`></TABLE`
120			`></DIV`
121			`><DIV`
122			`CLASS="REFSECT1"`
123			`><A`
124			`NAME="AEN3893"`
125			`></A`
126			`><H2`
127			`>Description</H2`
128			`><P`
129			`>The <SPAN`
130			`CLASS="PROPERTY"`
131			`>default_value</SPAN`
132			`> property allows the initial value of a`
133			`configuration option to depend on other configuration options. The`
134			`arguments to the property should be a <SPAN`
135			`CLASS="APPLICATION"`
136			`>CDL</SPAN`
137			`> expression, see`
138			`<A`
139			`HREF="language.values.html#LANGUAGE.EXPRESSION"`
140			`>the Section called <I`
141			`>Ordinary Expressions</I`
142			`> in Chapter 3</A`
143			`> for the syntactic details.`
144			`In many cases a simple constant value will suffice, for example:</P`
145			`><TABLE`
146			`BORDER="5"`
147			`BGCOLOR="#E0E0F0"`
148			`WIDTH="70%"`
149			`><TR`
150			`><TD`
151			`><PRE`
152			`CLASS="PROGRAMLISTING"`
153			`>cdl_component CYGPKG_KERNEL_EXCEPTIONS {`
154			`…`
155			`default_value 1`
156
157			`cdl_option CYGSEM_KERNEL_EXCEPTIONS_DECODE {`
158			`…`
159			`default_value 0`
160			`}`
161			`}</PRE`
162			`></TD`
163			`></TR`
164			`></TABLE`
165			`><P`
166			`>However it is also possible for an option's default value to depend on`
167			`other options. For example the common HAL package provides some`
168			`support functions that are needed by the <SPAN`
169			`CLASS="APPLICATION"`
170			`>eCos</SPAN`
171			`> kernel, but are`
172			`unlikely to be useful if the kernel is not being used. This`
173			`relationship can be expressed using:</P`
174			`><TABLE`
175			`BORDER="5"`
176			`BGCOLOR="#E0E0F0"`
177			`WIDTH="70%"`
178			`><TR`
179			`><TD`
180			`><PRE`
181			`CLASS="PROGRAMLISTING"`
182			`>cdl_option CYGFUN_HAL_COMMON_KERNEL_SUPPORT {`
183			`...`
184			`default_value CYGPKG_KERNEL`
185			`}</PRE`
186			`></TD`
187			`></TR`
188			`></TABLE`
189			`><P`
190			`>If the kernel is loaded then this HAL option is automatically enabled,`
191			`although the user can still disable it explicitly should this prove`
192			`necessary. If the kernel is not loaded then the option is disabled,`
193			`although it can still be enabled by the user if desired.`
194			`<SPAN`
195			`CLASS="PROPERTY"`
196			`>default_value</SPAN`
197			`> expressions can be more complicated than this if`
198			`appropriate, and provide a very powerful facility for component`
199			`writers who want their code to “just do the right thing”`
200			`in a wide variety of configurations.</P`
201			`><P`
202			`>The <SPAN`
203			`CLASS="APPLICATION"`
204			`>CDL</SPAN`
205			`> configuration system evaluates the <SPAN`
206			`CLASS="PROPERTY"`
207			`>default_value</SPAN`
208			`>`
209			`expression when the current package is loaded and whenever there is a`
210			`change to any other option referenced in the expression. The result`
211			`depends on the option's flavor:</P`
212			`><P`
213			`></P`
214			`><DIV`
215			`CLASS="VARIABLELIST"`
216			`><DL`
217			`><DT`
218			`><TT`
219			`CLASS="LITERAL"`
220			`>flavor none</TT`
221			`></DT`
222			`><DD`
223			`><P`
224			`>Options with this flavor have no value, so the <SPAN`
225			`CLASS="PROPERTY"`
226			`>default_value</SPAN`
227			`>`
228			`property is not applicable.</P`
229			`></DD`
230			`><DT`
231			`><TT`
232			`CLASS="LITERAL"`
233			`>flavor bool</TT`
234			`></DT`
235			`><DD`
236			`><P`
237			`>If the expression evaluates to a non-zero result the option is`
238			`enabled by default, otherwise it is disabled.</P`
239			`></DD`
240			`><DT`
241			`><TT`
242			`CLASS="LITERAL"`
243			`>flavor booldata</TT`
244			`></DT`
245			`><DD`
246			`><P`
247			`>If the result of evaluating the expression is zero then the option is`
248			`disabled, otherwise the option is enabled and its value is the result.</P`
249			`></DD`
250			`><DT`
251			`><TT`
252			`CLASS="LITERAL"`
253			`>flavor data</TT`
254			`></DT`
255			`><DD`
256			`><P`
257			`>The default value of the option is the result of evaluating the`
258			`expression.</P`
259			`></DD`
260			`></DL`
261			`></DIV`
262			`><P`
263			`>A <TT`
264			`CLASS="LITERAL"`
265			`>cdl_option</TT`
266			`> or other entity can have at most one <SPAN`
267			`CLASS="PROPERTY"`
268			`>default_value</SPAN`
269			`>`
270			`property, and it is illegal to have both a <SPAN`
271			`CLASS="PROPERTY"`
272			`>calculated</SPAN`
273			`> and a`
274			`<SPAN`
275			`CLASS="PROPERTY"`
276			`>default_value</SPAN`
277			`> property in one body. If an option does not have`
278			`either a <SPAN`
279			`CLASS="PROPERTY"`
280			`>default_value</SPAN`
281			`> or a <SPAN`
282			`CLASS="PROPERTY"`
283			`>calculated</SPAN`
284			`> property and it does not`
285			`have the flavor <TT`
286			`CLASS="LITERAL"`
287			`>none</TT`
288			`> then the configuration tools`
289			`will assume a default value expression of <TT`
290			`CLASS="LITERAL"`
291			`>0</TT`
292			`>.</P`
293			`><P`
294			`>On occasion it is useful to have a configuration option`
295			`<TT`
296			`CLASS="LITERAL"`
297			`>A</TT`
298			`> which has both a <SPAN`
299			`CLASS="PROPERTY"`
300			`>requires</SPAN`
301			`> constraint on some`
302			`other option <TT`
303			`CLASS="LITERAL"`
304			`>B</TT`
305			`> and a <SPAN`
306			`CLASS="PROPERTY"`
307			`>default_value</SPAN`
308			`> expression of`
309			`<TT`
310			`CLASS="LITERAL"`
311			`>B</TT`
312			`>. If option <TT`
313			`CLASS="LITERAL"`
314			`>B</TT`
315			`> is not enabled`
316			`then <TT`
317			`CLASS="LITERAL"`
318			`>A</TT`
319			`> will also be disabled by default and no`
320			`conflict arises. If <TT`
321			`CLASS="LITERAL"`
322			`>B</TT`
323			`> is enabled then`
324			`<TT`
325			`CLASS="LITERAL"`
326			`>A</TT`
327			`> also becomes enabled and again no conflict`
328			`arises. If a user attempts to enable <TT`
329			`CLASS="LITERAL"`
330			`>B</TT`
331			`> but not`
332			`<TT`
333			`CLASS="LITERAL"`
334			`>A</TT`
335			`> then there will be a conflict. Users should be`
336			`able to deduce that the two options are closely interlinked and should`
337			`not be manipulated independently except in very unusual circumstances.</P`
338			`><DIV`
339			`CLASS="TIP"`
340			`><BLOCKQUOTE`
341			`CLASS="TIP"`
342			`><P`
343			`><B`
344			`>Tip: </B`
345			`>If the first entry in a <SPAN`
346			`CLASS="PROPERTY"`
347			`>default_value</SPAN`
348			`> expression is a negative`
349			`number, for example <TT`
350			`CLASS="LITERAL"`
351			`>default_value -1</TT`
352			`> then this`
353			`can be misinterpreted as an option instead of as part of the`
354			`expression. Currently the <SPAN`
355			`CLASS="PROPERTY"`
356			`>default_value</SPAN`
357			`> property does not take any`
358			`options, but this may change in future. Option processing halts at the`
359			`sequence <TT`
360			`CLASS="LITERAL"`
361			`>--</TT`
362			`>, so the desired value can be expressed`
363			`safely using`
364			`<TT`
365			`CLASS="LITERAL"`
366			`>default_value -- -1</TT`
367			`></P`
368			`></BLOCKQUOTE`
369			`></DIV`
370			`><DIV`
371			`CLASS="NOTE"`
372			`><BLOCKQUOTE`
373			`CLASS="NOTE"`
374			`><P`
375			`><B`
376			`>Note: </B`
377			`>In many cases it would be useful to calculate default values using`
378			`some global preferences, for example:</P`
379			`><TABLE`
380			`BORDER="5"`
381			`BGCOLOR="#E0E0F0"`
382			`WIDTH="70%"`
383			`><TR`
384			`><TD`
385			`><PRE`
386			`CLASS="PROGRAMLISTING"`
387			`>cdl_option CYGIMP_LIBC_STRING_PREFER_SMALL_TO_FAST {`
388			`…`
389			`default_value CYGGLO_CODESIZE > CYGGLO_SPEED`
390			`}</PRE`
391			`></TD`
392			`></TR`
393			`></TABLE`
394			`><P`
395			`>Such global preference options do not yet exist, but are likely to be`
396			`added in a future version.</P`
397			`></BLOCKQUOTE`
398			`></DIV`
399			`><DIV`
400			`CLASS="NOTE"`
401			`><BLOCKQUOTE`
402			`CLASS="NOTE"`
403			`><P`
404			`><B`
405			`>Note: </B`
406			`>For options with the booldata flavor the current syntax does not allow`
407			`the default values of the enabled flag and the value to be controlled`
408			`separately. Functionality to permit this may be added in a future`
409			`release.</P`
410			`></BLOCKQUOTE`
411			`></DIV`
412			`></DIV`
413			`><DIV`
414			`CLASS="REFSECT1"`
415			`><A`
416			`NAME="AEN3964"`
417			`></A`
418			`><H2`
419			`>Example</H2`
420			`><TABLE`
421			`BORDER="5"`
422			`BGCOLOR="#E0E0F0"`
423			`WIDTH="70%"`
424			`><TR`
425			`><TD`
426			`><PRE`
427			`CLASS="PROGRAMLISTING"`
428			`>cdl_option CYGDBG_HAL_DEBUG_GDB_THREAD_SUPPORT {`
429			`display "Include GDB multi-threading debug support"`
430			`requires CYGDBG_KERNEL_DEBUG_GDB_THREAD_SUPPORT`
431			`default_value CYGDBG_KERNEL_DEBUG_GDB_THREAD_SUPPORT`
432			`description "`
433			`This option enables some extra HAL code which is needed`
434			`to support multi-threaded source level debugging."`
435			`}</PRE`
436			`></TD`
437			`></TR`
438			`></TABLE`
439			`></DIV`
440			`><DIV`
441			`CLASS="REFSECT1"`
442			`><A`
443			`NAME="AEN3967"`
444			`></A`
445			`><H2`
446			`>See Also</H2`
447			`><P`
448			`>Properties <A`
449			`HREF="ref.calculated.html"`
450			`><SPAN`
451			`CLASS="PROPERTY"`
452			`>calculated</SPAN`
453			`></A`
454			`>,`
455			`<A`
456			`HREF="ref.flavor.html"`
457			`><SPAN`
458			`CLASS="PROPERTY"`
459			`>flavor</SPAN`
460			`></A`
461			`> and`
462			`<A`
463			`HREF="ref.legal-values.html"`
464			`><SPAN`
465			`CLASS="PROPERTY"`
466			`>legal_values</SPAN`
467			`></A`
468			`>.</P`
469			`></DIV`
470			`><DIV`
471			`CLASS="NAVFOOTER"`
472			`><HR`
473			`ALIGN="LEFT"`
474			`WIDTH="100%"><TABLE`
475			`SUMMARY="Footer navigation table"`
476			`WIDTH="100%"`
477			`BORDER="0"`
478			`CELLPADDING="0"`
479			`CELLSPACING="0"`
480			`><TR`
481			`><TD`
482			`WIDTH="33%"`
483			`ALIGN="left"`
484			`VALIGN="top"`
485			`><A`
486			`HREF="ref.compile.html"`
487			`ACCESSKEY="P"`
488			`>Prev</A`
489			`></TD`
490			`><TD`
491			`WIDTH="34%"`
492			`ALIGN="center"`
493			`VALIGN="top"`
494			`><A`
495			`HREF="cdl-guide.html"`
496			`ACCESSKEY="H"`
497			`>Home</A`
498			`></TD`
499			`><TD`
500			`WIDTH="33%"`

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