OPTION                               DESCRIPTION
   Perceptual                This maintains perceptual differences. Colors are
                             interpreted relative to the destination device's
                             white point. This option is usually best for 
                             photographic scanned images.

   Colorimetric              This maintains individual colors at the expense of their
                             relative values. It is usually best for spot colors.

   Saturation                This maintains the levels of color saturation.  It 
                             sacrifices contrast to maintain color saturation. It 
                             is usually best for computer-generated graphics.

   Faster Matching           This offers a good compromise between photographs 
                             and computer-generated images, and takes less time.

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