Geography Markup Language (GML) simple features profile (with Corrigendum) http://www.opengis.net/spec/gmlsf/2.0.110-100r310-100r32012-04-052012-04-052011-05-24 CubeWerx Inc. interactive instruments GmbH Geonovum Cadcorp Ltd. CubeWerx Inc. ESRI Galdos Systems Inc. interactive instruments GmbH PCI Geomatics Linda van den Brink Clemens Portele Panagiotis (Peter) A. Vretanos Open Geospatial Consortium 2.0enapproved2012 Open Geospatial Consortium standardprofiletechnical