    | DocBook: The Definitive Guide 2.0.10 (Alpha) |
| | DocBook: The Definitive Guide 2.0.10 (Alpha) |
$Revision: 1.3 $
$Date: 2002/06/12 11:18:07 $
constant — A programming or system constant
constant ::= (#PCDATA|replaceable|inlinegraphic|inlinemediaobject|indexterm| beginpage)*
Name | Type | Default | ||
| class |
| None |
A Constant identifies a value as immutable. It is most often used to identify system limitations or other defined constants.
These elements contain constant: action, application, attribution, bibliomisc, bridgehead, citation, citetitle, classsynopsisinfo, code, command, computeroutput, database, emphasis, entry, filename, firstterm, foreignphrase, funcparams, funcsynopsisinfo, function, glosssee, glossseealso, glossterm, hardware, interfacename, keycap, lineannotation, link, literal, literallayout, lotentry, member, msgaud, olink, option, optional, para, parameter, phrase, primary, primaryie, productname, programlisting, property, quote, refdescriptor, refentrytitle, refname, refpurpose, remark, screen, screeninfo, secondary, secondaryie, see, seealso, seealsoie, seeie, seg, segtitle, simpara, subtitle, synopsis, systemitem, td, term, tertiary, tertiaryie, th, title, titleabbrev, tocback, tocentry, tocfront, trademark, ulink, userinput.
The following elements occur in constant: beginpage, indexterm, inlinegraphic, inlinemediaobject, replaceable.
Class identifies constants that are system or application limits (for example, the maximum length of a filename).
command, computeroutput, literal, markup, option, optional, parameter, prompt, replaceable, sgmltag, userinput, varname.
<!DOCTYPE para PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
<para>
In ACL, <constant>main::PCS</constant> contains the path component
separator character.
</para>In ACL, main::PCS contains the path component separator character.
<!DOCTYPE para PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
<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>The maximum legal length for a path name is PATH_MAX, defined in limits.h.
| | | |
| conftitle | | constraint |