output -- The format in which the output should be generated. The options are xml, kml, csv, or json.
KML, or Keyhole Markup Language, is an XML grammar and format for modeling and storing geographic features such as points, lines, images, and polygons for display in Google Earth™, Google Maps™, and Google Maps for mobile.
A full-featured version of our mashup that will query UPS for the package activity, strip out the cities, geocode them and plot them on a GoogleMap. This version uses the default output options from the chosen classes which results in very little custom code.