As per below:

void draw() {
  for (int i = 0; i < 20; i++) {
    drawLine(int(random(width)), int(random(height)),
    int(random(7)), int(random(255)));
  }
}

drawLine() is a function for drawing a line.  I'm just wondering why once in this for() Loop it draws 20 random lines in correspondence to the i variable in the loop, since I see no relationship between the int i and the function at all.  (The i variable is not operated or even visible in any way in the argument of the function)

Thanks for the heads up.