Define all, one or several custom meta-tags to store in the index. The meta tag values are accessible using their names in the <!--SET MAP--...--> and other tags alike.
This is very useful to output a different modification date, an another url or offer more extensive document descriptions or site-specific information.
This option was added in version 1.32. The CustomMetas=* extension was added in version 1.6.0825.0.