usefor-usefor-03 April 2005

3.1.6  Path

   The Path header indicates the route taken by an article since its
   injection into the Netnews system.  Each agent that processes an
   article is required to prepend one (or more) identities to this
   header.  This is primarily to enable relaying agents to avoid sending
   articles to sites already known to have them, in particular the site
   they came from, and additionally to permit tracing the route articles
   take in moving over the network, and for gathering Usenet statistics.

   path            =  "Path:" SP path-list CRLF

   path-list       =  [FWS]
            *( path-identity [FWS] path-delimiter [FWS] )
            tail-entry [FWS]

   path-identity   =  ( ALPHA / DIGIT )
            *( ALPHA / DIGIT / "-" / "." / ":" / "_" )

   tail-entry      =  path-identity

   path-delimiter  =  "!" ; possible other delimiters TBD

   The specific format and use of <path-identity> and <tail-entry> are
   discussed in [USEPRO].

--- ../usefor-usefor-02/Path.out          November 2004
+++ ../usefor-usefor-03/Path.out          April 2005