Material Types

Mbanji	Banji.
Mbanzi	Banzi.
Mbase	Base material.
MCgFX	Private.
Mcheen	Cheen.
Mdanel	Danel.
Mfog	Fog.
Mmabel	Mabel.
Mmaterial	Standard material.
Mnukei	Nukei.
Mplugin	Plugin material. Pass the plugin ID.
Mshadowcatcher	New in version R19: Shadow Catcher.
Mterrain	Terrain.