// Example that shows how to draw a bunch of random lines
// Each pixel position at the bottm and across the drawing window will be the
// starting point of a line.
// This sketch shows how truly random, random() is.
void setup() {
   size(500, 500);
   background(255);
   noLoop();
} // setup()

void draw() {
   for (int i = 0; i < width; i++) {
      line(i, height, i, random(height));
   }
} // draw()