| SplitInIsleAndHoles(InterfacePCBIWindow, Boolean, Boolean) | Check all subpolygons for holes and isles, make a list of new surfaces for each isle with own holes. |
| SplitInIsleAndHoles(IPCBIWindow, Boolean, Boolean) | Check all subpolygons for holes and isles, make a list of new surfaces for each isle with own holes. |