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Re:Note from Don Knuth – bug(s) in MetaPost? by precium on Thursday January 16, 2014 @08:35AM (#7069259)
How does one yawn into the abyss knowing that Dr Knuth himself produced "MULTIPLE errors" in writing code to ... draw a dot.
Re:Note from Don Knuth – bug(s) in MetaPost? by michaelhoffman on Thursday January 16, 2014 @09:00AM (#7069375)
MetaPost is not by Knuth, it is based on his own (presumably correct) code from Metafont.

http://en.wikipedia.org/wiki/MetaPost