Copying/Pasting

The editing mode (with vertices highlighted) is not necessary to copy or paste polygons. Simply right mouse click and a popup menu containing the copy and paste options will become visible. When a polygon is copied, the location of the defining vertex points are preserved in the XY plane such that when the polygon is pasted onto another level, the location (and size) of the polygon is preserved. When pasting a polygon, note that any existing polygon will be deleted.