int pos = 0;
void draw() {
  background(255);
  pos++;
  line(pos, 20, pos, 80);
  if(pos > width) {
    pos = 20;
  }
  delay(2);  // Stops the program for 250 millisecond


int pos = 10;
  pos++;
  line(pos, 20, pos, 2);
  if(pos > width) {
    pos = 100;
  }
  delay(100);  // Stops the program for 250 milliseconds
}