Milling big drill holes
Small switch, big work saving: When isolation milling, you can now have big mounting drillholes milled at the end with the outline and do not have to clamp extra large drill bits:
(Image 1: Dialog "isolation milling")
The lower switch does exactly that: If the board outline is milled with radius compensation, you can have the holes that are larger than the outline milling bit created with exactly this tool and save a lot of time reclamping.