usefor-usefor-01 September 2004

3.1.6  Path

   The Path header indicates the route taken by an article since its
   entry into the Netnews system, so that unnecessary redundant
   transmission can be avoided.

   path            =  "Path:" SP path-list CRLF

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

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

   path-delimiter  =  "!"

--- ../usefor-article-13/Path.out          May 2004
+++ ../usefor-usefor-01/Path.out          September 2004
@@ -1,13 +1,16 @@
-5.6.  Path
+3.1.6  Path
 
-   The Path-header shows the route taken by an article since its entry
-   into the Netnews system. It is a variant header (4.2.5.3), each agent
-   that processes an article being required to add one (or more) entries
-   to it. 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.
-   Finally the presence of a '%' path-delimiter in the Path-header can
-   be used to identify an article injected in conformance with this
-   standard.
+   The Path header indicates the route taken by an article since its
+   entry into the Netnews system, so that unnecessary redundant
+   transmission can be avoided.
+
+   path            =  "Path:" SP path-list CRLF
+
+   path-list       =  [FWS] path-identity
+            *( path-delimiter [FWS] path-identity ) [FWS]
+
+   path-identity   =  ( ALPHA / DIGIT )
+            *( ALPHA / DIGIT / "-" / "." / ":" / "_" )
+
+   path-delimiter  =  "!"