  COMMAND WATER
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    Purpose: create a realistic water-wave
              rings: how many waves are growing (1..3 looks good)
              times: how often the growing is performed, after the
                     whole process the 1st wave will have a distance
                     times*wavelength from the centre (should be 2..10)
      Usage: WATER(<objectID>,<frames>,<filename>,
                    [<amplitude>,<wavelength>,<sourceX>,<sourceY>,
                    <damping>,<times>,<rings>])
   Examples: water(1,40,obj,12.0,24,10,-10,1.6,4,1)
             water(1,60,ram:obj)
