On Sat, Sep 16, 2017 at 04:32:56PM +0900, Masataka Ohta <mohta@xxxxxxxxxxxxxxxxxxxxxxxxxx> wrote a message of 43 lines which said: > which means RFCs should be pure ASCII just as programming languages > use pure ASCII. Besides the good counter-examples mentioned by Lyndon Nerenberg, I suggest that you watch this presentation at IETF 95 <https://www.ietf.org/proceedings/95/hrpc.html> <https://www.youtube.com/watch?v=FnOnZFaK0bQ> (starts at 11:15)