Trimming a surface

After starting the Trim Both Surfaces command, proceed as follows.

1	Select the surface to be used as the limit. To change the selected limit surface, right-click on Limit Surface, choose Reset in the context menu and select another surface.
2	Select the surface(s) to be cut. To change the selected surfaces, right-click, select Reset Current Selection and select other surfaces. End selection by right-clicking and selecting Continue
3	Select the regions you want to keep To change the selected regions, right-click, select Reset Current Selection and select other regions.
4	Click or to confirm your selections and cut the surfaces. Click to discard your changes.