(gnus.info)Introduction


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Introduction
************

   GNUS is a program for reading and writing USENET news using GNU
Emacs.  This manual documents the use and simple customization of GNUS.

   Unlike other conventional newsreaders such as rn which was (:-) the
most popular newsreader in the world, GNUS runs inside the GNU Emacs
editor as a subsystem.  This means that there is no need to invoke an
editor when composing articles or mail.  The reading and writing of
articles can be done in the same Emacs environment you usually work in.

   Like rrn, a remote version of rn, GNUS can use computer networks for
retrieving articles.  This means that there is no need to have a local
copy of the news spool, to mount a remote file system over the network,
or to run Emacs on a remote machine.  Its great advantage is to balance
loads and exploit resources of the entire computer system in a
distributed environment.  The protocol used by GNUS is "NNTP", the
Network News Transfer Protocol, defined by RFC977.

   Unlike rrn, GNUS can talk to many NNTP servers easily.  The only
thing you have to do is to create startup files for each NNTP server.

   Like other libraries of GNU Emacs, GNUS is completely written in
Emacs lisp.  This means that GNUS is highly extensible and customizable
just like GNU Emacs.  It is possible to change the behavior of GNUS and
extend its functions by using variables and hooks.

   GNUS is pronounced *"NUZ"*.  Never call it *"ghu-NUZ"* nor
*"ghu-NAS"*.

   This manual is currently in progress and thus is incomplete.  Your
suggestions, bug fixes, and contributions are welcome.


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