Removing unused sectors and parts of sectors

I often work on WADs as I go, so I end up with sectors that aren't used in the game. How do I detach unused areas from used sectors and then delete them? In other words, I have sectors within sectors, divided by other sectors, so, for example, I get unused shapes not connected to the rest of the used sector which I'd like to delete.

Create a new sector encompassing the area that you want to delete. Then delete that sector.

Cjwright79 said:

Create a new sector encompassing the area that you want to delete. Then delete that sector.

..what? :S

I think the important thing is that audiodef understands.

He does understand! Thanks, bro.