The UK Public Record Office (PRO) makes available its Online Catalogue, a database of over eight million document references "with descriptions of the documents and descriptions of the classes in which they are categorized." This new service will prove absolutely invaluable to researchers planning a visit to the PRO at Kew. Users can browse the record collections by the alphabetical code of the department or court that created them (not by subject) or search by up to three keywords. The browsing page provides the full title of each department or court, the number of record classes within that collection, and the total number of records. Hyperlinked descriptions are available for each class and subclass. Keyword searches can be further modified by lettercode and class/ subclass. Searches look for class descriptions first and if none are found, provide a link to a document search using the same terms. Search results include lettercode title, class title, piece title, header title, and closure status. Additionally, the site provides an alphabetical list of over 100 full-text research information leaflets and information on the Core Executive Project, which offers reference numbers to selected policy records of 20th-century British Government departments. Helpful search tips and a glossary of terms used in the catalog are also available on-site.