Syntax:  BOX DRAW

  Draws a box.

  This command draws a box in overstrike mode.  The diagonally opposite
  corners of the box are given by the beginning and end positions of
  the current selection.  The box is drawn using '+' for the corners,
  '|' for the sides and '-' for the top and bottom.

  RELATED COMMANDS:

     BOX COPY                    BOX PASTE
     BOX CUT                     BOX PASTE OVERSTRIKE
     BOX CUT PAD                 BOX UPPERCASE
     BOX LOWERCASE