REDIT
REDIT invokes the room editor. You should use the REDIT command in any room in the zone you wish to edit. Note that you must have builder permission in that zone and only one person can edit the rooms in a particular zone at a time. Type REDIT SAVE to save your rooms, and REDIT DONE to exit the room editor.
You can set a default room to make new room creation a little quicker. For example, type "REDIT DEFAULT 3009" to make all new rooms start out as copies of the bakery. Note that the default setting will not be saved when you quit or when the mud reboots.
> redit > redit save > redit done > redit default 3009