World Geographic Reference System

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The World Geographic Reference System (GEOREF) is a geocode, a grid-based method of specifying locations on the surface of the Earth. GEOREF is essentially based on the geographic system of latitude and longitude, but using a simpler and more flexible notation. GEOREF was used primarily in aeronautical charts for air navigation,^[1] particularly in military or inter-service applications, but it is rarely seen today.^{[citation needed]} However, GEOREF can be used with any map or chart that has latitude and longitude printed on it.