$w nnea means that it is a formerly established access point/heading that is not valid as a reference in whatever cataloging rules are being used, so for RDA that means not valid as an RDA variant access point. Such references are not supposed to be displayed as references in the catalog. That's the basic idea at least. So a heading that was ok in AACR2 that would not be a proper variant access point in RDA would be coded $w nnea. If the AACR2 form IS a valid variant access point in RDA, then you would use $w nne.
Adam L. Schiff
University of Washington Libraries
Seattle, WA 98195-2900
(206) 685-8782 fax
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On Thu, 4 Apr 2013, Ted P Gemberling wrote:
> I revised a name authority record for RDA. I think my RDA headings are still under review. I wanted to know if I understood the $w subfield coding. It's n 2003127508 for Neumann, Robert (Dentist). The old (I presume AACR2) heading was Neumann, Robert, Zahnarzt. I just looked at the LC documentation at
> and realized that I probably used the wrong $w coding in the 400. I used nnaa which means it was a pre-AACR2 form of the heading, and the reference "will not be displayed." If this is an AACR2 form, the third character should be e. I'm not sure what "not displayed" means. I notice that the 400 form does display in the index screens of both OCLC and my home catalog, in spite of that coding.
> Any enlightenment would be appreciated.
> Ted Gemberling
> UAB Lister Hill Library