[ic] The "area" sub called from category_vertical component

[Ethan Rowe]

Hi.

Does anybody know where the "area" sub called from the old 
"category_vertical" component (I believe this was in Foundation in 
pre-4.8 days) is defined?  The sub is called via a loop (with prefix "box"):
[box-exec]area[/box-exec]

There are other subs called in there too, a sub called "cat".

I'm having trouble finding the definition.  It doesn't appear to be in 
the catalog_before.cfg or catalog_after.cfg, or in any include files.

Thanks.

-- 
Ethan Rowe
End Point Corporation
ethan at endpoint.com