Your .newsrc file, which resides in your home directory (~), is used
by most Unix newsreaders, including nn, to keep track of what
newsgroups you are subscribed to and what articles you've read.
Lines in the .newsrc file look like this:

 group1.name: m-n,p-q
 group2.name!

A colon (:) after the newsgroup name means you are subscribed and a
exclamation point (!) means you are unsubscribed.  The numbers are
articles, or ranges of articles, that you've read.

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