NAME¶
wml::std::label - Labels and References
SYNOPSIS¶
#use wml::std::label auxfile=NAME
<label name "Label Section">
<ref name>
DESCRIPTION¶
This module implements a mechanism of labels and references. Labels are defined
via variables, which are expanded with the
"<ref>" tag. A common problem is when
labels are referenced before they are defined. For this reason, labels are
stored in an auxiliary file. When the module is loaded, this file is read and
labels are defined. Then input is processed and at end of input, labels are
compared with their previous value. If some labels changed, then all labels
are written to the auxiliary file and a message is printed to warn that labels
are wrong.
AUTHOR¶
Denis Barbier
barbier@engelschall.com
REQUIRES¶
Internal: P2, P3, P4
External: --
