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: --