Map
A map is a 2D pictorial representation of an area. Graal has built-in functionality for generating, downloading and displaying maps. On servers that make use of the default features, players can access the map for their current area by pressing 'M' on the keyboard. The client will show the player's current position along with the positions of other players.
Maps are created by server staff, either through some dedicated graphics application or by use of Graal's map generator. Then they are uploaded to the server and scripts are written to direct the client to the relevant file through use of the setmap (?) command.
Multiple maps can be used on a single server. Most commonly they are used to represent the overworld, but other significant areas may be given their own maps (especially if they are relatively large or complex).
A smaller, largely transparent version of the map is displayed in the lower-left of the screen. It is called the minimap, and can be disabled by pressing Ctrl+3 (?).
(something about automapping (as in hiding the portions of the map that you haven't seen yet)?)
(also some specifics about automated map generation? I've never done it, nor had reason to read up on the process)