- noun an annual publication of national statistics of personal incomes and spending patterns
- Code name for a US Air force investigation of the 1960s into the alleged phenomenon of unidentified flying objects (UFOs)
- noun an annual publication of national statistics from various UK government departments
- A document which details the specifications for the CD-extra format.
- noun an official report of a Royal Commission, bound in blue covers
- noun a government publication with a blue cover, e.g. the report of a Royal Commission