PLAY ON, PLAY OFF, and PLAY STOP - event-trapping statements that enable,
                                   disable, and suspend play event trapping
Syntax
  PLAY ON
  PLAY OFF
  PLAY STOP
    - PLAY ON enables play-event trapping by an ON PLAY statement.
    - PLAY OFF disables the event trap; even if an event takes place,
      it is not remembered.
    - PLAY STOP inhibits the event trap; if an event takes place, it is
      remembered and the ON PLAY event-trap will be executed as soon
      as PLAY ON is executed.
 
See Also  <ON PLAY(N)>  <PLAY>  <PLAY FUNCTION>