"[Cartagen] uses Google's geographic data as a starting point, but lets people choose which features to include on their maps-streets, parks, churches, and so on-and how to visually represent those features, creating their maps from the ground up. Users can also add new data, which Cartagen can represent not just as points on the map but as outlines, polygons, overlapping shaded clouds-the possibilities are still expanding as Warren's team brainstorms new potential uses for its creation."
