Re: emacs-28 2c6a94c5b8: ; Correct the meaning of "cf." in tips.texi

[Gregory Heytings]

> >  Try to avoid using abbreviations such as ``e.g.'' (for ``for
> >  example''), ``i.e.'' (for ``that is''), ``no.'' (for ``number''),
> > -``cf.'' (for ``in contrast to'') and ``w.r.t.'' (for ``with respect
> > +``cf.'' (for ``compare''/``see also'') and ``w.r.t.'' (for ``with respect
> >  to'') as much as possible.  It is almost always clearer and easier to
> >  read the expanded version.@footnote{We do use these occasionally, but
> >  try not to overdo it.}
>
> I'm not sure about this change:
>
> - I don't think "see also" is correct.
>
> - In Bug#40011, I quote Writing for Computer Science by Justin Zobel 
> (2004), which says:

The reference on these matters is the CMOS, in which "cf." is defined as 
follows (section 10.43, p. 505): "{\it confer}, compare ("see, by way of 
comparison"; should not be used when {\it see} alone is meant)".