This is the Builder's Gudie for MOZ (Moo in OZ). MOO is Mud Object Oriented. MUD is Multi-User Dungeon or Dimension. In general, a MUD is a multi-user text-based virtual environment. For information on MUDs in general, see http://www.godlike.com/muds/ or your local search engine. For information on MOOs, see http://www.moo.mud.org/moo-faq/.
Oz is a multi-paradigmatic language that happens not to suck. See http://www.mozart-oz.org/.