Board Thread:Support Requests - Getting Technical/@comment-1251315-20140920125852/@comment-452-20140920164727

I would guess that "Forumoldedit" means "can edit pages in the Forum: namespace".

But that's only a guess.

Of course, if you want an absolutely definitive answer, looking at the source may provide better answers than even Wikia Staff.

edit: But that will only tell you what they functionally do, which may or may not be the same as what they are intended to do.