xAREA L T W H COMP|BOX|NONE

  This is a area hit gadget, like an invisible Button. 

  Nothing will be shown unless the gadget is hit, whereupon it will 
  COMP  = complement the area, or 
  BOX   = draw a box around it, or 
  NONE  = leave it alone.

  This event is useful, if you want to make something like an
  image map, for example.