The (perhaps unfortunately named) Wedgie command breaks the selected object into 2 or more wedges. This can be handy if you need to get, say, 4 rounded corners for a table frame by splitting a circle into 4 parts. The wedges are centered on the middle of the selected object. If you select several objects, they are merged into a single bitmap that is then sliced into wedges. The wedges always start at the 12:00 position and then work their way around the object clockwise.
Note that the selected object is deleted in the process of breaking it into wedges, so you may want to clone it before running the command.