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  1. Press the Play icon to start the animation, the Pause icon to stop it
  2. To see the animation with a different number of rows, first stop the animation, then use the +/- buttons to change the number of rows, then restart the animation
  3. To increase the speed, press the FastForward icon. Pressing it a second time will make it even faster. Pressing Play again while the animation is running will decrease the speed again.
  4. Press Reset to return to defaults (15 rows and slow speed)