This function allows you to find which towns are located next to any given town. Enter the name of a town in the first form and the program will find all the towns around it and sort them from closest to furthest.
The second form allows you to find the town name when all you have is the coordinates. The program works the same: it will find the towns around the specified coordinates and sort them from closest to furthest.
Note that the distances computed by the program are great-cricle distances i.e. "as-the-crow-flies" distances, not travel itineraries...
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