How to combine a large set of polygons with a Boost polygon?

Question

I am looking for a way using Boost Polygon to read in a large set of polygons from a file and output the resulting merge or merge into a result file. In this case, the polygons touch, but do not overlap. I can place data in any format. Not sure if there is a standard used by Boost Polygon. I am also looking for additional library documentation. Any help would be greatly appreciated. Thanks