A more efficient mechanism for filtering looping sub-tag values.
This is much the same as the [filter] tag,
except that it was designed to be wrapped around other
Instead of an "op" parameter, this tag expects one
or more filter names to be provided as
[PREFIX-filter strip namecase][PREFIX-param fname] [PREFIX-param lname][/PREFIX-filter]
See the filters category for a list of standard filters.
You may also create your own custom filters.