Standard Terminal Arrival Routes (STARs) and Standard Instrument Departures (SIDs) have been established and published as an air traffic control aid in certain complex terminal areas. They help reduce verbage on clearance delivery and control frequencies to provide the pilot with a description of terminal routing. Instructions for pilot use of these coded routes are contained in the Airman's Information Manual. Certain complex terminal areas are covered by Area Charts. Most modern GPS Systems are capable of displaying STARs and SIDs information in relation to the GPS moving map.