Catalog is the stored workspace library.
Catalog overview
Where
Open Catalog in the Bundata application for the active workspace. An open collection provides tabs for Overview (including the Change sizes multi-size chunking card), Documents, Contract, Explore, Search & Answer, Lineage (?tab=downstream), and Knowledge (?tab=knowledge, showing Context Engine layer coverage for that collection’s documents). A non-retaining workspace has no catalog of customer content.