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="72" ns="0" title="BOSH" />
      <p pageid="140" ns="0" title="Backscatter Spam" />
      <p pageid="120" ns="0" title="Bing Webmaster Tools" />
      <p pageid="27" ns="0" title="Blackberry Classic" />
      <p pageid="96" ns="0" title="CakePHP" />
      <p pageid="70" ns="0" title="CardDAV" />
      <p pageid="69" ns="0" title="CardDAV addressbook" />
      <p pageid="154" ns="0" title="Cisco IOS" />
      <p pageid="61" ns="0" title="CodeIgniter" />
      <p pageid="123" ns="0" title="Composer" />
    </allpages>
  </query>
  <query-continue>
    <allpages apfrom="Control Panel" />
  </query-continue>
</api>