DRAW A BOX                                                         <Alt>+B

  This function allows you to draw a filled box in the current colours. You
  will first be given a selection of which character you wish to use to fill
  the box, after which you can begin adjusting the size with the arrow keys,
  <Home>, <End>, <PgUp> and <PgDn>. <Tab> swaps between adjusting the top
  left corner and the bottom right corner. Press <Enter> to draw the box, or
  <Esc> to abort.