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Joint Photographic Experts Group Image  |  2007-06-20  |  57.7 KB  |  500x336  |  8-bit (256 colors)
   ocr: 1.Close your left eye and focus your right eye ont the cross. 2. Move the page slowly away from your eye and then slowly toward your eye. 3.At a distance of about 6-8 inches the black circle "disappears.