The HTML mark up produced by this template emits an [[Wikipedia:Geo (microformat)| Geo microformat]], which makes the location's [[Wikipedia:Geographic coordinate system|coordinates]] (latitude & longitude) [[Wikipedia:Parsing|parsable]], so that they can be, say, looked up on a map. As yet, [http://microformats.org/wiki/geo-extension-strawman the standard for doing this] for off-world bodies is still under development, but is supported in some microformat parsers (e.g. [http://buzzword.org.uk/swignition/ Swignition]). For more information about the use of [[Wikipedia:microformat|microformat]]s on Wikipedia, please see [[Wikipedia:WP:UF|the microformat project]].
Geo is usually produced by calling {{tl|coord}}, and uses HTML classes: