[Admins]

It's the new map format, you can make flat gmaps that are like a level list and also tell Graal what map image and minimap image to display, and Graal automatically puts you on the map once you enter level from the gmap. Online scripting on gmaps is a little bit different than in normal levels (its seen as one big level with a size of map width x 64 tiles by map height x 64 tiles), but makes things more interesting - npcs can move around freely and its not just connected levels like with the old setmap thing.
It's described in the levelgendoc.html how to use it, there are also some information about gmaps in the dungeongenerator docu.txt.