Rectangles: (5 entries)
  0: Rectangle: x1=0, y1=0, x2=0, y2=0
  1: Rectangle: x1=230, y1=578, x2=255, y2=602
  2: Rectangle: x1=301, y1=742, x2=334, y2=775
  3: Rectangle: x1=364, y1=913, x2=404, y2=953
  4: Rectangle: x1=414, y1=1036, x2=460, y2=1082