We can now add the authority record's control number to the matching bibliographic record's access points. Some ILS can potentially use the $0 to generate an easier linking method when updating headings in bib records. Our system will return the largest hierarchy match for that heading, and not any smaller hierarchy matches that may have also occurred. Here is an example (bib record): 650 #0 $a Asian Americans $v Fiction Our system will provide the fullest matching hierarchy authority control number to this heading: 650 #0 $a Asian Americans $v Fiction $0 sh2009114781 <http://lccn.loc.gov/sh2009114781> There is a separate authority record for just this heading: 650 #0 $a Asian Americans $0 sh 85008644 <http://lccn.loc.gov/sh85008644> But since the fullest match included the free-floating subdivision, the system prefers that $0 authority instead. Please note the embedded links above are for display purposes only and the $0 will represent just the authority control number text instead. We can turn this rule on for any libraries that request it, just let us know. As long as the matching authority record has a control number, we can use that to populate the $0 onto the end of the matching access point in the bib record. Nate Cothran | Vice President, Automation Services Backstage Library Works | Provo, Utah & Bethlehem, Pennsylvania 801.342.5697 | nate@bslw.com <mailto:nate@bslw.com?subject=Automation%20Services%20-%20Inquiry> | bslw.com <http://www.bslw.com/> | ac.bslw.com/mars <http://ac.bslw.com/mars>