Implementation

   HTML markup should be added to the document in the form of a META
   statement. This should be placed in the document head in accordance
   with the HTML 4 specification [1].  The identifier "geo.position" is
   used for  Latitude and Longitude data.  The identifier
   "geo.placename" is used for a free text representation of the
   position, for example "city, province" or "town, county, state". The
   identifier "geo.region" is used for the country subdivision code from
   ISO 3166-2 [10].

   For resources within the United States and Canada, the "geo.region"
   identifier as given by ISO 3166-2 is typically constructed from the
   2-character country code [5] as used in Internet domain names, and
   the common 2-character State/Province codes [8][9], joined with an
   underscore, for example "CA_BC" for British Columbia, Canada.

   Where the official subdivision code is unknown, the 2-character
   country code alone may be used in "geo.region", for example "DE" for
   Germany.

   It is anticipated that the "geo.placename" tag be used for resource
   recognition, rather than resource discovery, due to possible
   ambiguities in naming convention, language, word ordering and
   placename duplicates.

   Although the HTML specification [1] states that the name field is in
   general case-sensitive, these "geo" tags should be recognized by
   compliant agents regardless of case.  Coordinates should be ordered
   (Latitude ; Longitude) as for RFC 2426, RFC 2445 (vCard and iCal
   specifications) [6][7]. This is at variance with common GIS practice,
   but better matches the intended audience of this Draft.

Examples

     <META NAME="geo.position" content="48.54;-123.84">

   describes a resource at position 48.54 degrees North, 123.84 degrees
   West, while

     <META NAME="geo.position" content="-10;60">

   describes a resource at position 10 degrees South, 60 degrees West.

     <META NAME="geo.placename" content="London, Ont">
     <META NAME="geo.region" content="ca_on">

   describes a resource in London, Ontario, Canada while

     <META NAME="geo.placename" content="London">
     <META NAME="geo.region" content="gb">

   describes a resource in London, England (Great Britain).