Rectangles: (5 entries)
  0: Rectangle: x1=0, y1=0, x2=0, y2=0
  1: Rectangle: x1=298, y1=300, x2=314, y2=302
  2: Rectangle: x1=389, y1=381, x2=407, y2=384
  3: Rectangle: x1=479, y1=468, x2=502, y2=472
  4: Rectangle: x1=538, y1=532, x2=564, y2=537