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I placed some of the symbols next to the edge of the map to show locations and give a three-dimensional aspect to it. Or you could draw a partial town, city, castle, etc. for the map edges if you need to mark a location.
I could have zoomed in, and got not only a smaller part of the large map, but a smaller scale as well as showing more local detail.
The method is essentially the same, but the symbols would have to be changed in scale.