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DocBook: The Definitive Guide 0.0.25 for DocBook V5.0 (Alpha) |
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DocBook: The Definitive Guide 0.0.25 for DocBook V5.0 (Alpha) |
constant — A programming or system constant
constant ::= ![[-]](graphics/down.gif)
![[+]](graphics/right.gif)
phrase (db._phrase)replaceable
altanchorannotationbibliorefindexterm (db.indexterm.endofrange)indexterm (db.indexterm.singular)indexterm (db.indexterm.startofrange)inlinemediaobjectlinkolinkremarksubscriptsuperscriptxrefCommon attributes and common linking attributes.
Additional attributes:
A constant identifies a value as immutable. It is most often used to identify system limitations or other defined constants.
Common attributes and common linking attributes.
Identifies the class of constant
| Enumerated values: | |
|---|---|
| “limit” |
The value is a limit of some kind |
These elements contain constant: bridgehead, caption (db.html.caption), citation, citetitle, classsynopsisinfo, computeroutput, emphasis (db.emphasis), entry, firstterm, funcsynopsisinfo, glosssee, glossseealso, glossterm, html:button, html:label, html:legend, link, literallayout, member, olink, orgdiv, para, phrase (db.phrase), primary, primaryie, programlisting, quote, refdescriptor, refentrytitle, refname, refpurpose, screen, secondary, secondaryie, see, seealso, seealsoie, seeie, seg, segtitle, simpara, subtitle, synopsis, td, term, termdef, tertiary, tertiaryie, th, title, titleabbrev, tocentry, userinput.
The following elements occur in constant: text, alt, anchor, annotation, biblioref, indexterm (db.indexterm.endofrange), indexterm (db.indexterm.singular), indexterm (db.indexterm.startofrange), inlinemediaobject, link, olink, phrase (db._phrase), remark, replaceable, subscript, superscript, xref.
command, computeroutput, literal, markup, option, optional, parameter, prompt, replaceable, tag, userinput, varname<article xmlns='http://docbook.org/ns/docbook'> <title>Example constant</title> <para>In ACL, <constant>main::PCS</constant> contains the path component separator character. </para> </article>
In ACL, main::PCS contains the path component separator character.
<article xmlns='http://docbook.org/ns/docbook'> <title>Example constant</title> <para>The maximum legal length for a path name is <constant class='limit'>PATH_MAX</constant>, defined in <filename class='headerfile'>limits.h</filename>. </para> </article>
The maximum legal length for a path name is PATH_MAX, defined in limits.h.
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constraint |