This is probably Level Editor 101 here, and after a year on here I should know how to do this but, when dealing with dungeon walls with something like this:
(
http://i.imgur.com/01OPkIn.png)
How do you allow the walls to form this essentially upside down L shape without the weird overlap.
Plus, the ways I have been doing it, when I finish a room, the room is un-even as if a wall was too short to finish the L shaped room.
Hopefully I'm being clear enough. I think you have to use wielders if I'm not mistaken.
Hopefully you guys know what I'm talking about!