I was very happy when I found the new holes pocketing functionality. But while I was testing it I came across a limitation. Lets say I have a rectangle that has a hole and I would like to mill the rect, but not the hole. This doesn't seem possible. This is relevant when you want to engrave big texts for example, because there will be a lot of shapes with holes in them.
I added a little test svg file in which I tried a few things.
In svg it will draw the object using the normal v's and h's and when it creates the hole it will move (m) into the object and start drawing (v's and h's) from there again. Whatever you draw inside the shape seems to be subtracted from it.