gah, local editing

[Dave Kormann <davek@research.att.com>]

ok, i had completely missed richard godard's proposal for local
editing.  his is roughly similar to mine, and i don't have strong
opinions either way.  erik has pointed out to me elsewhere that he
likes 'content' (as in janus' proposal) better than 'send'.  i've no
problems with that.  also, my system suffers exactly the same
update/consistency problems as janus', which erik complained about.

erik's probably right that cords are the right way to do this.  maybe
i'll work on a revised, cord-based solution.  the protocol would be
virtually identical, with the messages becoming cord messages rather
than true mcp messages.
				dk