1. A non-transitory recording medium having recorded therein a program that allows a computer to perform a process of conveying map annotations, said process comprising the steps of: displaying a first map on a display surface at an origination location, wherein said first map has first map extents being map coordinates, wherein said display surface has display coordinates; annotating said map, said map annotations being defined within said display coordinates; geo-referencing said map annotations display coordinates with said first map extents of said map annotations, wherein said geo-referencing matches said map annotations first map extents that correspond with said map annotations display coordinates; producing a geo-referenced file; saving the geo-referenced file, wherein said saved geo-referenced file comprises map annotations and said map annotations first map extents; and transmitting said saved file from the origination location to a second location; and displaying said transmitted file on a copy of the first map on a second display surface at the second location, said map copy having copy map extents said copy map extents matching said first map extents, wherein said map annotations first map extents are preserved when displaying said transmitted file on the map copy.