2.1 Subject

Inform news-answers-request@mit.edu of the new Subject line, or
resubmit the entire posting to news-answers@mit.edu; in either case,
wait for reapproval before posting, so that we can remove obsolete
archived copies.  (Exception: If all you're changing is the date or
version number, and it was obvious from your original submission that
those might change, we've already marked it as a wildcard in our
records, so there's no need to resubmit it or wait for reapproval.)

2.2 Newsgroups line

Inform news-answers-request@mit.edu of the new Newsgroups line, or 
resubmit the entire posting to news-answers@mit.edu; in either case, 
wait for reapproval before posting, so that we can remove obsolete 
archived copies.  This applies also if you are posting to new or 
renamed newsgroups.

If a newsgroup has been split, or renamed, we still need you to tell us 
exactly what groups you will be posting to in the future, and what 
order they'll appear in.  Wait for reapproval before cross-posting to 
*.answers and the new newsgroups.  Also let us know if you will 
continue to post to the obsolete newsgroup for a few months.

2.3 From line, without changing maintainers

If the From line of your post changes, let us know what the new
address is by sending a note to news-answers-request@mit.edu before
posting. Make sure you specify whether the change is permanent or is a
one-time exception.

You do not need to wait for reapproval if you are sure that the
posting software at your new site will produce correct headers, unless
you are also changing other headers that do require approval.

2.4 Archive-name line(s)

Inform news-answers-request@mit.edu and wait for reapproval before 
posting, so that we may remove obsolete archived copies. This applies 
also if you wish to change any newsgroup-specific archive names you may 
have in your posting.

2.5 Followup-To line

As long as it exists and doesn't contain any *.answers newsgroups in 
it, you don't have to tell us if you change its contents.

2.6 Other normal or auxiliary header lines

As long as you don't change the overall structure of your headers 
(i.e., they still conform to the guidelines), you don't have to inform 
us about changes to other headers, or adding new headers.