Geographical Information Systems (GIS) allow users to capture, store, analyze, manage and present spatial data linked to location. GIS divides real world objects into discrete objects like houses and continuous fields like elevation. Google Earth is a program that allows users to search for places, add layers, create placemarks and view them on a virtual globe. Keyhole Markup Language (KML) is an XML language used to display geographic data in Google Earth and other GIS programs.