Specifically, when I got to IV.ii Lexing of punctuators, which proposes to fix, say, the ambiguity of "*" as an infix or prefix operator by introducing the unicode symbol × for the binary operator, and so on. Even better, to get out of C++'s way with the all-important "nested template termination" token >>, you are to use what copy-pastes into this comment form as '4▷▷▷' ‽
