Eid

Eids are essentially body part ids.

A chara collision binary (.ccb) and optionally, a model file (.mdl, though MCEX data type 9) declares every Eid that can be used within a model - it connects a joint to a Eid.

Their behavior is consistent between models and the game may directly access a joint through an hardcoded Eid.

FaithFramework can be used to display the current Eids for the current controlled actor.

TODO: Make a list of body part names for each Eid.