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Graphics Interchange Format  |  1997-01-13  |  17.5 KB  |  558x479  |  4-bit (14 colors)
   ocr: FIGURE 1 Byte-wide table lookups. 0 7 - - 8 9 15 (a) The original reversed-bit information 7 0 (b) Table look-up on the high byte 15 98 (c) Table look-up on the low byte 15 9 00 . 7 (d) Swap the two looked-up bytes