Query symbol.
Type & position: | command, preamble & main part |
Syntax: | !ifnset [<text>] |
Description: | With this command you can test if a symbol was not set
with the command line option -D or with !set. If
<text> wasn't set UDO will convert all lines bewteen
!ifnset and !else or !endif. If
<text> was set UDO will convert all lines between
!else and !endif if !else was used. The
example shows how to test if the symbol "british" isn't set. !ifnset [british] |
Exists since: | Release 5 Patchlevel 10 |
See also: | !ifset, Query commands |