rfc1036 December 1987

3.3.  Newgroup

            newgroup <groupname> [moderated]

    This control message creates a new newsgroup with the given name.
    Since no messages may be posted or forwarded until a newsgroup is
    created, this message is required before a newsgroup can be used.
    The body of the message is expected to be a short paragraph
    describing the intended use of the newsgroup.

    If the second argument is present and it is the keyword moderated,
    the group should be created moderated instead of the default of
    unmoderated.  The newgroup message should be ignored unless there is
    an "Approved" line in the same message header.