Re: miss spell in `accept-process-output' doc string

[martin rudalics]

> > Now that I think about it, I realize that many Emacs users have not studied
> > the advanced mathematics where they would encounter the term "iff".
> > So I think it is better to avoid that term.
> >
> > (I was the one who introduced it into Emacs doc strings.)
>
>
> I have added this to TODO for fixing post-22 release.
>
> ** Avoid using "iff" in doc strings.

Even advanced mathematical textbooks usually explain this in an initial
section.  Maybe we could add a definition in the manuals.