text: // Learning Processing
  // Daniel Shiffman
  // http://www.learningprocessing.com
  
  // Example 15-5: Setting pixels
  
  function setup() {
    createCanvas(200, 200);
  
    // Before we deal with pixels
    loadPixels();
  
    // Loop through every pixel
    // We can get the length of the pixels array just like with any array.
    for (var i = 0; i < pixels.length; i++ ) { 
  
      // Pick a random number, 0 to 255
      var rand = random(255);
  
      // Set each element of the array to a random value
      // We can access individual elements of the pixels array via an index, just like with any other array.  
      pixels[i] = rand; 
    }
  
    // When we are finished dealing with pixels
    updatePixels();
  }
  