According to the  Post-RDA Test Guidelines: "Catalogers making additions to AACR2 headings or making new headings based on existing AACR2 records will use AACR2 rules and appropriate LCRIs."
Since Priscian is not in RDA form, can a new authority record based on the AACR2 form be coded as RDA? 

Steven Arakawa 
Catalog Librarian for Training & Documentation
Catalog & Metadata Services, SML, Yale University
P.O. Box 208240 New Haven, CT 06520-8240  
(203)432-8286 [log in to unmask]

-----Original Message-----
From: Program for Cooperative Cataloging [mailto:[log in to unmask]] On Behalf Of Jennifer B Young
Sent: Wednesday, October 31, 2012 12:48 PM
To: [log in to unmask]
Subject: Transcription of square brackets

Greetings Colleagues,

A fellow NU cataloger has come across the following situation and we are stymied by how to proceed.

On the piece, the title is: [Prisciani] De accentibus 

So we have 245 10 ‡a [Prisciani] De accentibus

While our bib record is being cataloged using AACR2, we are contributing a RDA authority record.
100 0_ ‡a Priscian, ‡d fl. ca. 500-530. ‡t De accentibus. ‡l Italian
400 0_ ‡a Priscian, ‡d fl. ca. 500-530. ‡t [Prisciani] De accentibus

We have not been able to find any guidance in either AACR2 or RDA on how to transcribe the square brackets. In our minds, square brackets usually denote supplied information of some sort. We don't want others to think that we supplied something we did not. 

Thoughts and suggestions welcome!
Jennifer

Jennifer B. Young
Serials Catalog Librarian
Northwestern University Library
847.491.8978
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