The Final Acts constitute a record of the decisions taken at the World Radiocommunication Conferences (WRC) held every 3-4 years. They comprise both the new and revised provisions of the radio regulations, including all appendices, and the new and revised resolutions and recommendations approved by the conference. It is WRC’s role to review, and if necessary revise, the radio regulations, the international treaty governing the use of the radio-frequency spectrum and the geostationary-satellite and non-geostationary-satellite orbits.