Comment by morellt

I think i figured it out. 1000 pages of images with 40 rows and 200 columns of the repeating pattern of three dark squares with one light square vertically oriented. 1000x40x200 is 8,000,000. I think those slivers are the cover of the Moby Dick it parodies, with each cover overlaid on the last, and the resolution absolutely destroyed to save storage space.