logical_variable = LSWOFF ( ISWNUM )

	This logical function will return  .TRUE.  if touch panel switch number
	ISWNUM has changed fron the on state to the off state  since  the  last
	time LSWOFF was called with switch number ISWNUM specified.  .FALSE. is
	returned the first time LSWOFF is called for a particular switch. Valid
	switch numbers are from 0 to 31.