Map Keys Maps have keys.The objects on a map are represented using symbols.
{"Image DocumentName": "Map KeysMaps have keys. The objects on a map are represented using symbols.", "Image ImageDescription": "A symbol is a picture on the map that represents something in the real world. To understand the symbols on a map you need a key. Maps use a key, or legend to explain the meaning of each of the symbols used in the map. The key usually shows a small picture of each of the symbols used on the map, along with a written description of the meaning of each symbol.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}