RE: faq.texi

[Drew Adams]

    >Wouldn't M-x compare-windows do that more easily?

    That could be pretty good, but I'd have
    to bind it to some key sequence first - C-c c, perhaps.

FWIW, I've always used C-= as a prefix for comparisons. These are the only
ones I have, but other people might know and use other comparison commands.

 C-= b  ediff-buffers
 C-= d  diff
 C-= e  ediff-files
 C-= f  ediff-files
 C-= w  compare-windows

Perhaps such a comparison prefix would be useful for Emacs generally.