Ishar is populated by two types of entity: persons (such as yourself) and
mobiles (mob for short).  A mobile is an artificial person generated by the
system. While some of them may seem to have a limited sort of awareness, they
are NOT intelligent at all (just try talking with one!).  Just little
computer drones, methodically going about their business.

They are also known as 'NPC's, short for Non Player Characters.

See Also: Rooms, Objects, World