Hmm. "Affected subclause:" is probably not quite what we want here, because it could be more than one section and it could be a clause rather than a subclause that we name. But other than that detail, this looks like it could be good. Can you provide a screenshot?

@zygoloid: I've attached the screenshot. I haven't found a [diff] section applying to an entire clause; it's always subclauses. And "Affected subclause" doesn't look so bad even if multiple subclause numbers follow.

Looks great, much nicer than my simplistic #1803!

Personally I think it might read even better if the "Change:" line came before "Affected subclause:".

@jensmaurer Look at the first change in [diff.cpp03.library] for a "whole clause" case. In fact, that's a "whole 14 clauses" case, but it looks like it's the only example of its kind.

[diff.cpp03.library] is broken in a way, anyway: Why don't we have a similar paragraph for the other C++xy subclauses? Certainly, the library has evolved with each iteration of the standard.

It would be nice to say "Affected clause: 14-30", but \ref always produces "Clause" in front.

I've gone for "Affected: Clause 14 - Clause 30" for now: