what is the list of symbols on a map called
Map symbolization A map is a smaller representation of an area on the earthâ€™s surface; therefore, map symbols are used to represent real objects. Without symbols, maps would not be possible.[3] Both shapes and colors can be used for symbols on maps. A small circle may mean a point of interest, with a brown circle meaning recreation, red circle meaning services, and green circle meaning rest stop. Colors may cover larger areas of a map, such as green representing forested land and blue representing waterways. To ensure that a person can correctly read a map, a map legend[citation needed] is a key to all the symbols used on a map. It is like a dictionary so you can understand the meaning of what the map represents/[3]
Power symbol The well-known on/off power symbol was the result of the logical evolution in user interface design. Originally, most early power controls consisted of switches that were toggled between two states demarcated by the words On and Off. As technology became more ubiquitous, these English words were replaced with the universal symbols line "|" and circle "o" (typically without serifs) to bypass language barriers. This standard is still used on toggle power switches.