vichan/inc/lib/htmlpurifier-4.6.0/library/HTMLPurifier/ConfigSchema/schema/HTML.DefinitionRev.txt

HTML.DefinitionRev
TYPE: int
VERSION: 2.0.0
DEFAULT: 1
--DESCRIPTION--

<p>
    Revision identifier for your custom definition specified in
    %HTML.DefinitionID.  This serves the same purpose: uniquely identifying
    your custom definition, but this one does so in a chronological
    context: revision 3 is more up-to-date then revision 2.  Thus, when
    this gets incremented, the cache handling is smart enough to clean
    up any older revisions of your definition as well as flush the
    cache.
</p>
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