  COMMAND EXPLODE
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    Purpose: create a realistic explosion
      Usage: EXPLODE(<objectID>,<frames>,<filename>,
                     <time>,<gravity constant>,<eta (Stokes)>,<v0>,maxRot>)
   Examples: explode(1,180,hd1:objects/obj,12,-10.0,-0.0001,42,9)
             explode(1,48,obj,12.8,-10.0,-0.001,52,7)
