I don't remember what's where. I think that there are three major hacks here:

1. support for authenticated news servers.

2. proper handling of long References: lines (both input and output), 
per RFC 822.

3. something dealing with signatures, but i forget what. i think it was to
put the sig-appending code from inews into nn so that we could prompt the
user and make sig-appending optional on a per-post basis.

I did this all in early 1997, so I really don't remember much about it, and 
if nn has gone through versions since then, these patches may not still work.

The best thing to do is to just open each file and search for my name, 
"reikel". I at least commented everything I did.