POV-Ray : Documentation : Spotted
  POV-Ray 3.6 Documentation Online View Spiral2 Waves Spotted

The spotted pattern is identical to the bozo pattern. Early versions of POV-Ray did not allow turbulence to be used with spotted. Now that any pattern can use turbulence there is no difference between bozo and spotted. See section "Bozo" for details. Spiral2 Waves

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