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TO:   Ramin@su-star.arpa
FROM: Bob Floyd, rwf@su-ai
RE:   half tones

You want to do half tones on the Versatec printer.  I have developed
an algorithm, in a paper called ``An Adaptive Algorithm for Spatial
Grayscale.''  You could get it from my secretary, at MJH 338, or call
497-1565) and we'll send you a copy.