- feature_code
- ADM1: Province
- ADM2: District/Metropole
- ADM3: City/Town
- PPL: Populated place
- feature_class
- A: country, state, region,...
- H: stream, lake, ...
- L: parks,area, ...
- P: city, village,...
- R: road, railroad
- S: spot, building, farm
- T: mountain,hill,rock,...
- U: undersea
- V: forest,heath,...