How to make a passageway in your cube? This is driving me nuts!

[KKCBulletBill]

Alright. This is the real gipper. I cannot figure out how to make a doorway. I tried the clipper tool but nothing happens. I tried putting a hallway partially into the first box, then highlighting one of the walls and clicking "caulk." Been having a weird time here. How can I make a passageway?

[sago007]

Basically you don't. You make the walls around the passage way and the empty space in the middle becomes the passageway. There is a subtract tool that can be used to cut it, but it has not been optimized properly (or rather q3map has not been optimized properly and handles it really bad) and is therefore not recommended.