Win Qualifier
Use this function to switch to the next qualifier to be used in
conjunction with the mouse buttons for Window-Cycling.
These are the qualifiers available :

  Any Alt     - Press any alt key
  Any Command - Press any Amiga/Command key
  Any Shift   - Press any shift key
  Control     - Use the control key

Remember : The left mousebutton is used to move a window to front.
           The right one is used to move a window to the back.