Indexing these fields is important to provide access to the contents of an item when multiple works are contained within a single item.

It's critical that title access points (uniform titles) are indexed in their entirety, not just select subfields. When subfields are removed from access points, their meaning can fundamentally change. Access point strings are like indivisible, unique identifiers. It's like removing the portion of a personal name heading that differentiates it from similar names. These other subfields include words that will enrich searching: If a user's search includes a word that appears in a subfield that isn't currently indexed--like the date of a treaty in $d--relevant records might not be retrieved. Our databases are full of records for compilations. These records include carefully managed uniform titles that users should be able to click on to retrieve a list of all other records that also include that title, whether as a main or added entry. They can currently do this in Vega for topics and contributors.