Material Name: How the material type will be referenced in 3d Max, etc. The user readable name.
Parent Material: The fallback material type if an error occurs. (Warning: it is possible to crash the editor by creating an error loop by making the parent material the same as the ID.)
Buoyancy: Positive buoyancy will make objects with this material type float. Negative bouyancy will make it sink in water. (Does not change how the object is treated outside water)
Havok Impact Data Set: The ImpactDataSet used for this Material Type
Havok Display Color:The color the material will display when using the tmg command in console. Note: This is not the color displayed when pressing F4 in the editor or tcg in console.
Stair Material: Check to make the havok data a stair material. This allows proper IK movement when walking up or down stair collision. (Note: Failing to do this will result in stuttering)
Arrows Stick: Check this box if you want arrows to stick in this material type.