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>
    <allpages>
      <p pageid="83" ns="0" title="Bucket" />
      <p pageid="438" ns="0" title="CloudDB" />
      <p pageid="429" ns="0" title="Cloud Backup" />
      <p pageid="431" ns="0" title="Cloud Backup FAQ" />
      <p pageid="25" ns="0" title="Cloud Computing" />
      <p pageid="93" ns="0" title="Cloud Hosting" />
      <p pageid="100" ns="0" title="Cloud Hosting backup" />
      <p pageid="546" ns="0" title="Cloud MQTT" />
      <p pageid="92" ns="0" title="Cloud Object Storage" />
      <p pageid="2" ns="0" title="Cloud Server" />
    </allpages>
  </query>
  <query-continue>
    <allpages apfrom="Cloud Server backup" />
  </query-continue>
</api>