slrn (s-lang read news) is a newsreader, i.e. a program that accesses a newsserver to read messages from the Internet News service (also known as Usenet). Beside the usual features of a newsreader, slrn supports scoring rules to highlight, sort or kill articles based on information from their header. It is highly customizable, allows free key-bindings and can easily be extended using the sophisticated s-lang macro language. Offline reading is possible by using either slrnpull (shipped with slrn) or a local newsserver (like leafnode or INN).