MFreeShapes [FirstShape.w,LastShape.w] ; Free/delete all/range of Shapes

Allows you to free all, or a range of, chunky Shape objects. Chunky Shape objects
contain graphics and possibly cookie data, so if you free these objects the
data will be freed also. If you omit the parameters it will free all objects
unconditionally, but if you specify a range of objects to free it will check that
each one exists first and if not will generate an error.