MUD is an abbreviation for Multi User Dungeon. In MUDs player move their characters thrue a virtual world and interact there with other player and/or computer controled characters.
MUDs consist out of a collection of "rooms". A room is an object, which is connected to another room via exits and can contain other objects like items or players.
Rooms in MUDs must not be a room in the normal sense of meaning, but instead can be a part of a whole landscape. A player can by "entering" an exit move from one room to another.
All the rooms together with their connections make up the map of a MUD. It is one of the most important and exiting parts of mudding to scout the MUD; thats means to explore its map. But unfortuneatly drawing maps by hand is a really hard work, and these map are never easy to read.
For this purpose SMM was written. But it has to do even more
jobs,.. aliases, actions, etc,.. all the nice kind of stuff, which any
MUD client can do and which eases mudding.