text: var i = 10;
  var j = i+20;
  
  setManyLights(0,500,'#000000');
  updateLights();
  // Set a light color.  Pass index and color.  Color can be in web notation or RGB 3 numbers
  setLight(0,'#ff0000');
  setLight(1,255,255,255);
  // call updateLights to actually change the light bulbs
  updateLights();
  // delay for N milliseconds so people can perceive your changes
  delay(5000);
  
  // set lots of lights to a single color
  // setManyLights (starting index, count, color)
  setManyLights(0,500, 255,255,255);
  fadeManyLights(0,500, 100, 0,255, 0, 2);
  delay(5000);
  // Note that the circles aren't filled in!
  // That's because we forgot to tell the bulbs to change.
  // This is a simulator feature to help you debug your code.
  // Let's updateLights() now:
  updateLights();
  delay(1000);
  
  // Normal javascript of course works:
  var i, j;
  for(j=0;j<20;j++)
  {
    for(i=0;i<500;i++)
    {
      setLight(i,(j*i*10)%255,0,0);
    }
  updateLights();
  delay(100);
  }
  // That's all you need to know!
  