usefor-article-03 February 2000

5.  Mandatory Headers

   An article MUST have one, and only one, of each of the following
   headers: Date, From, Message-ID, Subject, Newsgroups, Path.

   Note also that there are situations, discussed in the relevant parts
   of section 6, where References, Sender, or Approved headers are
   mandatory. In control messages, specific values are required for
   certain headers.

   For the overall syntax of headers, see section 4.1.  In the
   discussions of the individual headers, the content of each is
   specified using the syntax notation. The convention used is that the
   content of, for example, the Subject header is defined as <Subject-
   content>.

   A proto-article (see 8.2.1) may lack some of these mandatory headers,
   but they MUST then be supplied by the injecting agent.

--- ../s-o-1036/Mandatory_Headers.out          June 1994
+++ ../usefor-article-03/Mandatory_Headers.out          February 2000
@@ -1,28 +1,19 @@
 5. Mandatory Headers
 
-An article MUST have one, and only one, of each of the  fol-
-lowing headers: Date, From, Message-ID, Subject, Newsgroups,
-Path.
+   An article MUST have one, and only one, of each of the following
+   headers: Date, From, Message-ID, Subject, Newsgroups, Path.
 
-     NOTE: MAIL specifies (if read most carefully) that
-     there  must be exactly one Date header and exactly
-     one From header, but otherwise does  not  restrict
-     multiple  appearances  of  headers.   (Notably, it
-     permits  multiple   Message-ID   headers!)    This
-     appears  singularly  useless,  or even harmful, in
-     the context of news, and much current  news  soft-
-     ware  will  not  tolerate  multiple appearances of
-     mandatory headers.
+   Note also that there are situations, discussed in the relevant parts
+   of section 6, where References, Sender, or Approved headers are
+   mandatory. In control messages, specific values are required for
+   certain headers.
+
+   For the overall syntax of headers, see section 4.1.  In the
+   discussions of the individual headers, the content of each is
+   specified using the syntax notation. The convention used is that the
+   content of, for example, the Subject header is defined as <Subject-
+   content>.
 
-INTERNET DRAFT to be        NEWS                      sec. 5
-
-
-Note also that there are situations, discussed in the  rele-
-vant  parts  of  section  6,  where  References,  Sender, or
-Approved headers are mandatory.
-
-In the discussions of the individual headers, the content of
-each is specified using the syntax notation.  The convention
-used is that the content of, for example, the Subject header
-is defined as <Subject-content>.
+   A proto-article (see 8.2.1) may lack some of these mandatory headers,
+   but they MUST then be supplied by the injecting agent.