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#### 11.9.10 Glossary

~/.gnus.el
  When the term ~/.gnus.el is used it just means your Gnus configuration file. You might as well call it ~/.gnus or specify another name.
Back End
  In Gnus terminology a back end is a virtual server, a layer between core Gnus and the real NNTP-, POP3-, IMAP- or whatever-server which offers Gnus a standardized interface to functions like "get message", "get Headers" etc.
Emacs
  When the term Emacs is used in this FAQ, it means either GNU Emacs or XEmacs.
Message
  In this FAQ message means a either a mail or a posting to a Usenet Newsgroup or to some other fancy back end, no matter of which kind it is.
MUA
  MUA is an acronym for Mail User Agent, it's the program you use to read and write e-mails.
NUA
  NUA is an acronym for News User Agent, it's the program you use to read and write Usenet news.