Below are two examples of the same basic message.  The first shows
what the "is NOT citable" line would look like, and the second shows
the "citable" indication.  The first also shows what a "non-vetted"
indication might look like, and the contains no such vetted indication
(indicating that the person is on the vetted list).

///////////////////////////////////////////////////////////////////////////
From        gcn@pandora.gsfc.nasa.gov
Date:       Wed 30 Sep 97 12:34:45 EDT
Reply-to:   john@machine.domain
Subject:    BONG 1234: GRB970828

Message_number: 1234
Message_from:   John Doe at MIT

We have made R band images using the 1.4m XYZ telescope of the XTE-PCA
error box reported in BONG #1230.  The images (300 sec integrations each)
were made at 29.31, 29.45 and 29.52 UT.  We detected N objects below the
POSS limit of 21 mag.  Only one of those objects (RA=12h04m23s Dec=14d12'22")
showed variability (decreasing) greater than 0.2mag.  ...blah blah blah....
blah blah blah....blah blah blah....blah blah blah....blah blah blah....
blah blah blah....blah blah blah....blah blah blah....blah blah blah....
blah blah blah....blah blah blah....blah blah blah....blah blah blah....
blah blah blah....blah blah blah....blah blah blah....blah blah blah....

For further information see:  http://space.mit.edu/~john/grb970828

This message is NOT citable in publications.

John Doe is not on the list of vetted submitters.

///////////////////////////////////////////////////////////////////////////
From        gcn@pandora.gsfc.nasa.gov
Date:       Wed 30 Sep 97 12:34:45 EDT
Reply-to:   john@machine.domain
Subject:    BONG 1234: GRB970828

Message_number: 1234
Message_from:   John Doe at MIT

We have made R band images using the 1.4m XYZ telescope of the XTE-PCA
error box reported in BONG #1230.  The images (300 sec integrations each)
were made at 29.31, 29.45 and 29.52 UT.  We detected N objects below the
POSS limit of 21 mag.  Only one of those objects (RA=12h04m23s Dec=14d12'22")
showed variability (decreasing) greater than 0.2mag.  ...blah blah blah....
blah blah blah....blah blah blah....blah blah blah....blah blah blah....
blah blah blah....blah blah blah....blah blah blah....blah blah blah....
blah blah blah....blah blah blah....blah blah blah....blah blah blah....
blah blah blah....blah blah blah....blah blah blah....blah blah blah....

For further information see:  http://space.mit.edu/~john/grb970828

This message IS citable in publications.