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The <geo> tag allows entry of geographical coordinates in style with RFC1876. For example, specifying degrees, minutes and seconds of latitude and longitude:
<geo>40 53 40 N 40 00 32 W</geo>
All coordinates should be referenced to WGS84.
Variations of the above allow specification of degrees and minutes, and degrees only. Decimals can be added to increase precision. Additional meta-data can also be specified as attributes for the location, like this:
<geo>40 53 40 N 40 00 32 W type:mountain region:US scale:100000</geo>
In the rendered article, the tag will be replaced with 48°46'36"N 121°48'51"W, which is also a Wikilink to a page of map resources for that point.
Coordinates specified in RFC2426 format are also supported, i.e. two signed, decimal numbers separated by a semicolon, indicating latitude North and longitude East, respectively.
In addition to a point, the tag can also specify a bounding box by giving two, opposite corner points, like this:
<geo>48 45 N 121 47 W to 48 47 N 121 49 W</geo>
Following the geographical coordinates, further parameters can optionally be supplied. Attributes are:
Sets the type of this location, which will be used for the reverse mapping of the points. This will also influence the default map scale. Types are:
|adm1st(pop)||Administrative unit of country, 1st level (province, county). Population should be specified. Commas will be ignored in pop.||1:1,000,000|
|adm2nd(pop)||Administrative unit of country, 2nd level (municipality). Population should be specified. Commas will be ignored in pop. Use city for administrative units at this level that is also a city.||1:300,000|
|city(pop)||City, with specified population. Commas will be ignored in pop. There should be no blanks. Cities with unspecified population will be treated as minor cities.||1:30,000 ... 1:300,000|
|landmark||Cultural landmark, building of special interest, tourist attraction and other points of interest.||1:10,000|
The type information will be stored in the database.
Sets the desired map scale as 1:N. This will override the default scale. The scale: prefix can be omitted.
Sets the preferred map region of coverage, used in selecting appropriate map resources for the area. The region should be supplied as either a two character en:ISO 3166-1 alpha-2 country code, or an en:ISO 3166-2 region code.
When a region is specified, for the map resource, the page Wikipedia:Map sources/RR will be used if it exists. RR is the two character country code.
Specify an alternative page for map sources, in the form of Wikipedia:Map sources/P. The page attribute will override region and globe specifications with regards to which map source sub-page is used.
When rendered in HTML, articles with coordinates will get a 'geo.position' meta tag, making it compatible with Internet geographic resources, such as http://geourl.org/. The region attribute, if stated, will appear in a 'geo.region' meta tag.