You are looking at the HTML representation of the XML format.
HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <random>
      <page id="230" ns="0" title="API Documentation RunningExamples server.get possible os images PHP" />
      <page id="551" ns="0" title="Kundencenter vServer Rescue System" />
    </random>
  </query>
</api>