"sequenced after" undefined

[sdutoit]

From an email to cxxeditor@:

I found "sequenced after" used in 5.17[expr.ass] but I could not find where it was defined. (I searched N3485. This is the only appearance. )

Would it better to use "sequenced before" to instead, or introduce the term "sequenced after" in 1.9[intro.execution] just like italicized "sequence before"?

PS. I found both "sequenced before" and "sequenced after" in WG14/N1570 5.1.2.3/2 defined as normative terms.

[zygoloid]

Forwarded as core + library issues.