| Имя | Описание |
|---|---|
| CityInfo | a struct used to describe information about city |
| CityInfoString | a struct used to describe information about city displayed in Form and it's members are string type |
| Command | |
| CoordinateSystemData | this class is used to get, set and manage information about Location |
| CoordinateSystemDataForm | coordinate system data form |
| DuplicateForm | dupliate coordiante data form |
| PlaceInfo | a class used to store information of all city include it's name,Latitude,longitude,timezone |
| UnitConversion | a class used to deal with converting operation |