Thinking of this further.....
So if I were to switch to Hatches from Wipeouts, how would I make the background the same color as the background of the rest of the dwg? I know how to make the diagonal background change, but the area NOT being worked on, I want to be the same as that around it but not show and walls, etc. underneath it. - Basically mimicking a Wipeout.
'Edited' - I don't want the unused area to 'gray'.
I hope you understand what I am trying to ask, I don't know a better way to describe it.