3d Max - Multi-Sub Object

Teaching 3ds Max class today, I revisited the Multi-Sub Object Material (MSOM). Different than a one color or image material, the multi-sub object material has several ID channels to assign colors and materials to sub levels of an object. For example, if you had a Mickey Mouse type character, you could assing a MSOM with ID's set to all the colors of the character. At a sub-object poly level, assign the ID's to the parts of the character. Once the material is applied, the ID's will dispaly the sub materials. Very effective.