Have got most things going that I need but layers is a problem.
If I set up say 3 layers and currently layer 1 has drawings on it, I want to place a sub drawing in layer 2, how do I select layer 2, and when I do that the screen should be blank, awaiting for the drawing to be placed in it. Then if I select layer 1 it should show the original drawings (not the new one on layer 2) and then If I select the default layer 0 it should show both !
Have I got this right ? Something I have missed I think.