Display this Path--offset by aPoint, clipped by clipRect and the form
associated with this Path will be displayedr according to one of the sixteen
functions of two logical variables (rule). Also the source form will be first
anded with aForm as a mask. Does not effect the state of the Path
Designate a rectangular area that should be used as the brush for
displaying the circle. Click any button at a point on the screen which
will be the center location for the circle. The curve will be displayed
with a long black form.