WFS (Web Feature Service) is a standard defined by ISO (the International Organization for Standardization). It describes a method whereby applications can access geographic feature data and their associated attribute data regardless of the format of the underlying database. OpenCities Map support for WFS is read-only.

Because the WFS client support is read-only, there is little direct interaction with the WFS server itself. When connecting to the service, the client discovers the version supported by the server and the features available. Once discovered, you can query the features using the standard OpenCities Map query tools. Queried features are transformed into the geographic coordinate system of the active design file.

WFS services are read-only. Queried features cannot be edited. To remove queried features, connect to the WFS service and use Erase Cached Features.

To manipulate WFS features, consider importing the geometry into the open design file using the Map Imports / Exports dialog.

WFS versions 1.0.0, 1.1.0 and 2.0.0 are supported.