cx = -0.7
cy = 0.27015
for y = 0 to 299
   for x = 0 to 299
      zx = (x - 150) / 100
      zy = (y - 150) / 150
      color3 0 0 0
      for iter = 0 to 127
         if zx * zx + zy * zy > 4
            color3 iter / 16 0 0
            break 1
         .
         h = zx * zx - zy * zy + cx
         zy = 2 * zx * zy + cy
         zx = h
      .
      move x / 3 y / 3
      rect 0.4 0.4
   .
.
