[Python-Dev] Checklist for changing Python's grammar

[Chris Angelico]

As part of a bit of hacking on CPython, I'm looking at playing with
the grammar. In the source tree, Grammar/Grammar, there's a note
advising me to follow the steps in PEP 306, but PEP 306 says it's been
moved to the dev guide. Should the source comment be changed to point
to https://docs.python.org/devguide/grammar.html ? Or is there a
better canonical location for the dev guide?

ChrisA