Map Index
What is a Map index
A map index is just like any other index that you would find in a book, but it uses map coordinates to help you find the exact spot of a place on a map. The map index can not work with out a grid, for the grid has the lines that show you where the place is.
More Explination
The picture above is a map, and under it is the index. The index is always in alphabetical order, making easy to find the exact place you want to find. It shows the coordinates, so when you find them on the map, you will find the place you were looking for.