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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.
Example: !ifnset [british]
Exists since: Release 5 Patchlevel 10
See also: !ifset, Query commands

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Last updated on May 19, 2014