The leafnode package contains leafnode, applyfilter, texpire, checkgroups, fetchnews and newsq. leafnode is the NNTP server daemon. applyfilter filters newsgroup articles according to regular expressions. texpire expires old articles and unread groups. checkgroups inserts newsgroup titles into the newsgroup database. fetchnews sends posted articles to and retrieves new articles from an upstream news server. newsq shows articles waiting to be sent upstream.