This option allows you to expand the call number search when you search for the call number in item or holdings/checkin records. If an item/holdings record has a call number, that call number is used in the search. If the item/holdings record has no call number, the search is expanded to look for a call number in the bibliographic record. If neither the item/holdings record nor the bibliographic record has a call number, the item or holdings/checkin record is not included in the results. When you enable this option, you can also use the call number field as above when you perform subsequent actions, such as Sort and List, on the review file.
