geo.xml

<alps version="1.0">

 <description>
   geo (pronounced "gee-oh") is a simple format for marking up WGS84
   geographic coordinates (latitude and longitude). This ALPS
   description of geo allows any hypermedia format that supports ALPS
   to use the geo format.
 </description>

 <element id="geo" appears="MAY">
   <description>
     A geographic location on Earth.
   </description>
   <child href="#latitude" appears="MUST"/>
   <child href="#longitude" appears="MUST"/>
 </element>

 <child id="latitude">
  <description>
    A measurement of latitude. This MUST specified in decimal degrees
    and SHOULD be specified to six decimal places.
  </description>
 </child>

 <child id="latitude">
  <description>
    A measurement of longitude. This MUST specified in decimal degrees
    and SHOULD be specified to six decimal places.
  </description>
 </child>
</alps>