From: g andruk (email@example.com)
Date: Thu Aug 12 1999 - 22:04:01 CDT
> 5.4. Subject
> Agents SHOULD NOT depend on nor enforce the use of back references
> by followup agents. For compatibility with legacy news software the
> Subject-content of a control message MAY start with the string
> "cmsg ", non-control messages MUST NOT start with the string
> "cmsg ".
Before I forget: can this language be tightened a bit, so it's clear
that it's only a control message if a Control: header is present?