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="1067" ns="0" title="Application Error Condition: Database Configuration or Setup Required" />
      <page id="1049" ns="0" title="Application Warning Condition: Calendar Out of Date" />
    </random>
  </query>
</api>