learn-postspectacular_umea-workshop-2009/day1/basics_03_drawing/basics_03_drawing.pde
void setup() {
  size(200, 200);
}

void draw() {
  // how can we avoid this big black lump and add some shades?
  stroke(0,0,0);
  line(0, 0, mouseX, mouseY);
}

