1852 Geography Markup Language 3.2 GIS, Text (Mark-up) The Geography Markup Language (GML) is the XML grammar defined by the Open Geospatial Consortium (OGC) to express geographical features. GML serves as a modeling language for geographic systems as well as an open interchange format for geographic transactions on the Internet. Version 3.2 introduced a new GML XML namespace and represents ISO standard 19136. Full specifications can be found at http://www.opengeospatial.org/standards/gml Text 170 Archaeology Data Service / Archaeology Data Service 18 May 2017 18 May 2017 application/gml+xml MIME fmt/1047 PUID gml File extension 1407 Geography Markup Language 3.2 ASCII header: <?xml version="1.0" , followed by gml namespace declaration xmlns:gml='http://www.opengis.net/gml/3.2 1 Absolute from BOF 0 0 3C3F786D6C2076657273696F6E3D(22|27)312E30(22|27){0-320}786D6C6E733A676D6C3D(22|27)687474703A2F2F7777772E6F70656E6769732E6E65742F676D6C2F332E3222 Has lower priority than 429 XML Schema Definition Has priority over 319 Geography Markup Language Has priority over 638 Extensible Markup Language Is subsequent version of 319 Geography Markup Language Is subtype of 638 Extensible Markup Language