[rfa/doco] Move protocol to an appendix

[Eli Zaretskii]

> Date: Mon, 21 Jan 2002 14:20:13 -0500
> From: Andrew Cagney <ac131313@cygnus.com>
> 

> I should note that this is a straight copy.

If you just reshuffled text, please go ahead and commit it.  I can't
read these diffs anyway ;-)

> PS: Sorry about the diff, for some reason my change scrambles diff.

Probably because it found some false match in the wrong place.
Perhaps playing with the context size ("diff -U NUM") would yield a
more readable result.