string search in "rn"

[Clark L. Coleman]

I have seen some neat tricks with KILL files, but how do you find the
documentation for this stuff? The man pages for "rn" are pretty much
useless (on my system, anyway) for sophisticated kills. (Put another
way: I am too stupid to figure it out from the man pages.) 

Specifically, I want to :

 1) Kill all news articles that were cross-posted to talk.politics.mideast,
     to use one example.

 2) Kill all subjects containing a particular substring.

 3) Kill all postings from a particular poster.

Any pointers are appreciated.

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"We cannot talk of freedom unless we have private property." -- Gavriil Popov,
Mayor of Moscow, September 11, 1990. |||  clc5q at virginia.edu