How can I reply to a thread in the digest?

Sat Nov 5 18:16:40 UTC 2011

I am running Thunderbird 7.01 on 64 bit Fedora 16 RC5.
I tried installing the "undigestfy" plug-in but it complains
the Fedora test list digest is in an improper format.

So how do I reply in thread?

-- 
Chuck Forsberg WA7KGX N2469R     caf at omen.com   www.omen.com
Developer of Industrial ZMODEM(Tm) for Embedded Applications
   Omen Technology Inc      "The High Reliability Software"
10255 NW Old Cornelius Pass Portland OR 97231   503-614-0430