/* @pjs crisp=true; */

void setup() {
  size(100,100);
  stroke(0,255,0);
}

void draw() {
  background(255);
  for (int i=0; i < width; i += 3) {
    for (int j=0; j < height; j += 3) {
      rect(i, j, 2, 2);
    }
  }
}