Comment 6 for bug 1125621

copied over from Jennifer Weston's post for bug 1892038 so as to not lose it

Cataloging Working Group would like to investigate ways to create new record attributes using rda fields (example: the 347 field does not currently have an rda definition which could be used for MP3 Audiobooks with item_form=i AND 347$b=MP3)

This will require continued CWG discussion from bug #1835736
From Elaine's wording - This may be a good place to begin a CWG discussion on how to integrate the MARC fields designed for RDA and that drill down specifically and granularly in an items attributes that might be important to user discovery -- anything from fields that define format to those that provide contributor characteristics.