Artful offers several methods of drawing a box:

       DRAW_BOX()
       SHADOWBOX()
       ZOOM_BOX()

and the most recent addition, BOXER(), which is the recommended method.
It contains all the abilities of the previous methods.

All methods employ a numbering convention, using 13 numbers to describe
possible boxes. The numbers reference the boxes below:


                      +----+ +----+ +----+ +----+
                      | 1  | | 2  | | 3  | | 4  |
                      +----+ +----+ +----+ +----+

                      ###### ###### ######
                      # 5  # # 6  # # 7  #
                      ###### ###### ######

                      ###### ###### ######
                      # 8  # # 9  # # 10 #
                      ###### ###### ######

                      +----+ ------ +----+
                      | 11 | | 12 | | 13 |
                      +----+ +----+ +----+

Using BOXER(), each box type may be displayed as an exploding box, with
and without shadow.