usefor-article-04 April 2001

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.

--- ../usefor-article-03/Mandatory_Headers.out          February 2000
+++ ../usefor-article-04/Mandatory_Headers.out          April 2001