RDA Toolkit is an integrated, browser-based, online product that allows users to interact with a collection of cataloging-related documents and resources including RDA: Resource Description and keyword searching all documents; the ability to create, store, and share personal and local cataloging documents; and an unlimited number of profiles that allow individual users to set and save personal preferences. Subscriptions to RDA Toolkit are sold by the user. A user is a single access seat to the toolkit. Buying more than one user allows the subscriber to have multiple users concurrently access the toolkit. A subscriber may buy any number of users.