1. Click the first point of the opening polygon within the outline polygon .
2. Click the second point of the opening polygon within the outline polygon .
3. Click additional points for the opening within the outline polygon.
4. Close the polygon.

With every side you enter you can change the support depth manually.

1. Select Delete Opening.
2. Click the opening to be deleted.

1. Click the side of the outline polygon to be modified.
2. Define the new support depth:
   • by entering the desired projection beyond the boundary manually (positive values = outwards) or
   • by clicking a reference point through which the side in question is to be moved
     

Note: To modify all support depths of the entire outline polygon (including the outlines of openings) in a single step, select Support Depth, click twice in the workspace with the right mouse button when the prompt ”click side of polygon” appears and enter a new support depth.