Custom Groups: broken?

[Shadowstar]

Well I've done some more poking around and apparently, contrary to what the components.txt file says, it's NOT an ability. It looks like it's supposed to be one of the vehicle size requirements, but the file is poorly documented on where its supposed to go or how its supposed to be entered. All it says is:

Requirement X Type:
Specific Component - Must have, Specific Component - Cannot have, General Type - Have exactly,
General Type - Cannot have, General Type - Min Percent, General Type - Max Percent,
General Type - Min Amount, General Type - Max Amount, Custom Group - Cannot have,
Custom Group - Have exactly, Custom Group - Min Percent, Custom Group - Max Percent,
Custom Group - Min Amount, Custom Group - Max Amount, Ability - Cannot have,
Ability - Have exactly, Ability - Min Percent, Ability - Max Percent,
Ability - Min Amount, Ability - Max Amount

There are alot of useful features in this list, but absolutely no indication of how to put them in. I've tried several different ways, like entering them in a list like the abilities, to entering new requirements with the above names but nothing is working. I can't help but feel that I'm doing something wrong, but just can't figure out what it is.