You can do this for XClips by adding points into the space you want to clip and then wrapping around the area you want to clip out. It's similar to how you clip around an image as show in
this video. Trick is that the polyline can't cross over it's self. Points can co-exist at the same point, but the polyline can cross over. Sometimes you will get an error about crossing, if you do you can usually just in close enough and just pick next to the point in question. The print pen width output usually fills in the gap fine.