schemas.opengis.net is the official schema repository of the Open Geospatial Consortium. www.opengis.net is the official namespace of the OpenGIS® schemas. uml.opengis.net is the UML model repository of the OpenGIS® schemas. OGC best practices document schema and discussion paper schema are also available. OpenGIS® and OGC® are registered trademarks of the Open Geospatial Consortium. You may downl