reconnecting threads

[Ian Zimmerman <nobrowser@gmail.com>]

People in mailing lists often use broken MUAs or else are just careless
and ignore thread structure when posting.  Is there any way in Gnus to
say "the current article is a followup to article foo" and display it as
such from now on?  In the absence of a nicer way, perhaps edit the
current article and insert a References header?  Does Gnus pay attention
to In-Reply-To headers when threading?

Thanks for any ideas.

-- 
A true pessimist won't be discouraged by a little success.