symbol — A name that is replaced by a value before processing
phrase db._phrase |
| | | | )*
symbol is a name that represents a value. It
should be used in contexts in which the name will actually be replaced
by a value before processing. The canonical example is a
#defined symbol in a C program where the C
preprocessor replaces every occurrence of the symbol with its value
before compilation begins.
Limit value of the
class attribute identifies those symbols
that represent system limitations (e.g., the number of characters
allowed in a pathname or the largest possible positive integer). DocBook
V3.1 introduced the
element, which may be more suitable for some of these symbols.
<article xmlns='http://docbook.org/ns/docbook'> <title>Example symbol</title> <para>No filename may be more than <symbol class='limit'>MAXPATHLEN</symbol> characters long. </para> </article>