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 STRIG(n%) {ON | OFF | STOP}
 
 Usage Notes
   ■ If your program contains event-handling statements and you are compiling
     from the BC command line, use the /W or /V option. If you do not use
     these options and your program contains event traps, Visual Basic
     generates the error message, "ON event without /V or /W on command
     line." See: ◄BC Command-Line Options►
 
   ■ STRIG(n%) ON enables joystick-event trapping. If joystick trigger n% is
     pressed after a STRIG(n%) ON statement, the routine specified in the ON
     STRIG statement is executed.
 
   ■ STRIG(n%) OFF disables joystick-event trapping. No trapping takes place
     until another STRIG(n%) ON statement is executed. Events occurring while
     trapping is off are ignored.
 
   ■ STRIG(n%) STOP suspends joystick-event trapping. No trapping takes place
     until a STRIG(n%) ON statement is executed. Any ON STRIG events that
     occur while trapping is suspended are remembered and processed when the
     next STRIG(n%) ON statement is executed. However, remembered events are
     lost if STRIG(n%) OFF is executed.
 
   ■ When a joystick event trap occurs (that is, the GOSUB is performed), an
     automatic STRIG(n%) STOP is executed so that recursive traps cannot take
     place. The RETURN from a trapping routine automatically executes a
     STRIG(n%) ON statement unless an explicit STRIG(n%) OFF was performed
     inside the routine.
 
   ■ In previous versions of Basic, the statement STRIG ON enabled testing
     of the joystick triggers; STRIG OFF disabled joystick-trigger testing.
     The current version of Basic ignores the earlier versions of the
     STRIG ON and STRIG OFF statements.