Name: Carl Reed
 
Email: creed@opengeospatial.org

MIME media type name: Application

MIME subtype name:    Standards Tree -gml+xml

Required parameters:  None

Optional parameters:
   The charset parameter of application/gml+xml is handled in the
   same fashion as for application/xml, as specified in 
   Section 3.2 of [RFC3023]
 
Encoding considerations: As per Section 3.2 of [RFC3023]
 
Security considerations:
   The OGC Geography Markup Language (GML) is a generic format for
   exchanging geographic information, but application designers must
   not assume that it provides generic protection against security
   threats.  RFC 3023, section 10, discusses security concerns for
   generic XML, which are also applicable to GML.
 
   Xlink references in GML documents may cause arbitrary URIs to be
   dereferenced. In this case, the security issues of RFC 3986,
   section 7, should be considered.
 
Interoperability considerations:
   Different versions of GML specify different XML Schema documents used
   for the validation of GML documents. Starting with version 3.2, the
   GML version information is represented in the namespace. As
   applications may only support a subset of all published GML
   versions, the use of the version parameter is recommended.
 
Published specification :
   GML (Geography Markup Language) is an international standard
   adopted by both the Open Geospatial Consortium (OGC) and
   International Organization for Standardization (ISO). The latest
   version at the time of this writing is 3.2.1 which is published by
   ISO as ISO 19136:2007. The standard can be accessed online at
   http://www.opengeospatial.org/standards/gml.
 
The OGC GML MIME specification has also been approved by the OGC
   Membership and is published here:
   http://portal.opengeospatial.org/files/?artifact_id=37743
 
Applications which use this media :
   GML is a generic device-, platform-, and vendor-neutral XML
   grammar and is supported by a range of applications creating,
   providing access to and processing geographic information. The use
   of GML is in use internationally with hundreds of deployed
   applications able to create and ingest GML payloads, including all
   of the major GIS vendors, many database providers, earth browzer
   applications, and so forth.
 
Additional information :
 
 1. Magic number(s):    None.
 2. File extension(s): .xml or .gml
 3. Macintosh file type code: TEXT
 4. Object Identifiers: None
 
    The OGC is an international voluntary consensus standards
    organization focused on defining and maintaining standards that
    enable interoperability for using geospatial content and services
    in any application that requires the use of geospatial content or
    services. The OGC website is www.opengeospatial.org.
 
 Person to contact for further information :
 
    Name : Clemens Portele
    Address:Interactive Instruments, Bonn, Germany
    Email : portele@interactive-instruments.de
 
 Intended usage: Common
 
 Author/Change controller:
      The GML standard is a work product of the Open Geospatial
      Consortium (OGC). The OGC and the GML Standards Working
      Group have change control over the GML standard.

      MIME types for use in OGC standards and formats are defined
      by the OGC Members and discussed and approved by the OGC
      Naming Authority (OGC-NA). The function and role of the OGC-NA
      is described in RFC 5165 and in the OGC Policies and Procedures
      here: http://portal.opengeospatial.org/files/?artifact_id=23325