I'm working on a mod that uses otherwise undefined biped slots on some non human races like horses. I've created ArmorAddOn and Armor forms, created NIFs that fit into these slots, and tested it in-game and it all works perfectly, but the CK gripes about "Armor [FormID] uses invalid biped slot 55 for race" every time I start it up, and it would be nice to be able to name the slots so I can keep track of which one I'm using for what mesh without using a text file.

tl;dr How do I rename the biped slots for purely cosmetic purposes during development?