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__NAME__ purpose
return input verbatim if the specified Scratch variable exists, empty string otherwise
__END__
__NAME__ see also
__END__
__NAME__ description
The filter allows "conditional output" of the input string, based on the
value of a &glos-scratch; variable.
</para><para>
In other words, received input is passed through verbatim, if the specified
&glos-scratch; variable holds a &glos-true; value. Empty string is returned
otherwise.
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__NAME__ online: Filter example
<programlisting>
[set tide]1[/set]
[filter gate.tide]The Gate is open.[/filter]
</programlisting>
__END__