//    Instruction Example :      track.key.resize.speed.set (float,float)


        screen.resolution.set (512,384)

        screen.set (BACK)
          pattern.display ("avo\bubble.gif")
        screen.end ()

        @sprite=sprite.load ("avo\dinosaur.spr")
        sprite.display (@sprite,CENTER,CENTER)

        @track=track.create (TRACK_LOOP | TRACK_PINGPONG)
          track.key.set (0)
            track.key.resize.speed.set (100,100)
          track.key.set (1)
            track.key.resize.speed.set (0,0)
        track.end ()

        @sequence= sequence.play (@track,@sprite,TRACK_KEEPALL)

        text.display ("Press a key to exit.",CENTER,350)

        keyboard.wait ()

        script.stop ()