Holds the monster types — the broad categories (such as dragon, goblin, or undead) that monsters are grouped under — and the artwork bindings each type uses.

Data in this file includes

• Name — The name of the monster type.
• Small Images — The shared picture file that supplies the type's small monster images, together with the range (a starting and ending index) that selects this type's slice of it.
• Custom Bitmap — An optional per-type custom image file, with its own directory, used for user-installed art that overrides the shared pictures.
• Portrait — A separate full-size portrait image file for the type.