Using the !iflang command you can test the language UDO will use in the destination file. Use the following words to test the language:
In addition to these words you can use
A query with
all always returns a true value, a query with
none always returns a false value.
If you write a small documentation you can enter all langaguages to a single source file:
!iflang [german] !docinfo [title] Die Benutzeranleitung zu !else !docinfo [title] The User's Guide to !endif
The !ifnlang command is related to !iflang. But !ifnlang will check if you do not convert to the given destination language. Thus you can write the upper example this way, too:
!ifnlang [german] !docinfo [title] The User's Guide to !else !docinfo [title] Die Benutzeranleitung zu !endif
It goes without saying that you can test more than one language.