white paper

noun2

1. •
   A document based on research informing and educating a reader regarding a topic, which may also promote a product or a solution.
2. •
   (UK, Ireland) A parliamentary document announcing or proposing a government policy or action.

   • The report of the British Transport Commission to the Minister of Transport on its re-appraisal of the plan for the modernisation of British Railways has been published as a White Paper. — 1959