Return a rectangle enclosing the morph at the current cursor. Note that the cursor may be a float and may be out of range, so pick the nearest morph. Assume there is at least one submorph.
Add morph-specific items to the given menu which was invoked by the given hand. This method provides is invoked both from the halo-menu and from the control-menu regimes.
Answer a list of (<categoryName> <list of category specs>) pairs that characterize the phrases this kind of morph wishes to add to various Viewer categories.