First draft of MathML4 has been published

Just in time for TPAC, the first draft of MathML4 is now officially 
published:

    https://www.w3.org/TR/2022/WD-mathml4-20220908/

Thanks to the authors and especially to David Carlisle, who did the 
editing!



Bert
-- 
  Bert Bos                                ( W 3 C ) http://www.w3.org/
  http://www.w3.org/people/bos                               W3C/ERCIM
  bert@w3.org                             2004 Rt des Lucioles / BP 93
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