If you do not have DD Pro, the Dungeon menu will not be present.
The Dungeon menu allows access to specialized Dungeon Designer Pro commands if it is installed. You can add symbols, trim walls and break holes in walls.
Note: If you try to use these commands on drawings not created using Dungeon Designer Pro templates, they may not work. To correct this problem, use Add Definitions.
Click on any menu command to get more information: