Michael Sperberg-McQueen is justly famous as Editor-in-Chief of the Text Encoding Initiative, and also as the perennial keynote speaker at the annual SGML conferences.
He is authoritative on SGML and XML, and erudite on a frightening number of other subjects. He and I split the actual work of creating this specification along approximately equal lines; I used to say that I wrote 40% and Michael wrote 80%, then I chopped. He deserves most of the credit for the grammar engineering.
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