| Name | Unit | Description |
|---|---|---|
| TCmpUMNClient | CmpMSClient | component type to communicate with a UMN server |
| TCmpWMSClient | CmpWMSClient | component type to communicate with a WMS server |
| TCustomCmpClient | CustomCmpClient | the component type to communicate with a map server (abstract type) |
| TdmWMSClient | WMSClient | data module to access to a TXMLDocument and TIdHTTP |
| TEnvelope | GISClient | an envolpe is a defined region with the min./max. X/Y coordinates |
| TFrmNavigationView | NavigationView | a 'virtual' Form (only to design the TMapViewer) |
| TMapViewer | CmpMapViewer | the visualization component |