Keyhole Markup Language
Appearance
KML (an acronym for Keyhole Markup Language), is file format for displaying data on maps.
In the same way that a Web browser displays web pages written with HTML, KML draws your data on maps like Google Maps and virtual globes like Google Earth.
It is an international standard [1], maintained by the Open Geospatial Consortium [[2]].
Google, the previous maintainers of the specification, have extensive documentation [3].