10  LET X = 1
 20  IF X THEN  PRINT "X IS TRUE"
 30  IF  NOT X THEN  PRINT "X IS FALSE"
 40  ON X GOSUB 100,200,300
 50  ON X GOTO 300,200,100
 100  PRINT "APPLE": RETURN
 200  PRINT "BANANA": RETURN
 300  PRINT "CHERRY"