At one time
rnr may have meant "Russell News Reader". But now
Russell Schulz (just like
Microsoft) claims it does not mean a thing. You can find current
rnr version 2.44 at
http://www.worldgate.ca/~rschulz/uucp/.
The great thing about rnr is it is about the only newsreader that could do ...
But there are not many of us UUCP'ers around anymore, so I suppose this would be one of the factual nodes that everyone else don't care about.