This article is from the Puerto Rico FAQ, by Zeydy Ortiz Laureano firstname.lastname@example.org with numerous contributions by others.
Some news readers support the creation of a file, called "kill file",
to limit the articles that are accessed. The main purpose of the file
is to mark as read some articles based on some pattern. You can
eliminate all messages from a particular subject or a given person.
The following information is specific to the rn/trn news reader. [If
you have information for other news readers, send me a note with the
Pressing a 'k' when reading an article you can mark as read all
articles with the same subject as the current one. Pressing 'K' will
do the same but will also add a line to the local kill file such that
the every time you read the group, articles with the same subject are
marked as read.
You can edit directly your kill file using control-K (^K). You can add
a line such as:
to eliminate all articles that contain the string 'unwanted subject' in
the Subject: line.
To discard articles from a particular person, add
to the kill file where 'e-mail address' is the login name and the
complete site where the person is posting messages. You will need to
add a backslash ('\') before each dot in the site address.
For more information, read the "rn killfile FAQ" in news.answers or
< ftp://rtfm.mit.edu/pub/usenet/news.answers/ > and the
manual pages for your news reader.