Geography Markup Language (GML) RWG
The Geography Markup Language (GML) Revision Working Group maintains the OpenGIS GML Specification. Work is currently focussed on progressing standardisation of GML through ISO/TC 211 as ISO 19136. This is being carried out by a joint OGC RWG/ISO Editting Committee. GML 3.1 - recently issued by OGC as a recommendation paper - is the current Committee Draft of ISO 19136. Project discussion is primarily hosted on the GML TWiki.