Warning, /education/marble/tests/data/NetworkLinkControl.kml is written in an unsupported language. File is not indexed.

 <?xml version="1.0" encoding="UTF-8"?>
 <kml xmlns="http://www.opengis.net/kml/2.2" xmlns:gx="http://www.google.com/kml/ext/2.2">
   <NetworkLinkControl>
     <minRefreshPeriod>0</minRefreshPeriod>
     <maxSessionLength>-1</maxSessionLength>
     <cookie>cookie=sometext</cookie>
     <message>Message</message>
     <linkName>Link name</linkName>
     <linkDescription>Link description</linkDescription>
     <linkSnippet maxLines="2">Link snippet</linkSnippet>
     <expires>2014-02-02T00:00:00</expires>
     <Update>
       <targetHref>Some-targethref</targetHref>
     </Update>
   </NetworkLinkControl>
 </kml>