Slice Up Your Pizza
This example shows a circle being divided into sixteen
slices one slice at a time. Your job will be to do the
same thing to a box. Inspecting the code will help you
some. Notice the use of the wait command. It causes a delay
to occur before one image is erased and the next is drawn.
BTW, notice that this program calls itself in its last line. This
creates an endless loop. It is called RECURSION when a
program calls itself. So, this pizza program is recursive.