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="188" ns="0" title="Bulk checkDomainRequest" />
      <p pageid="131" ns="0" title="Bulk transferDomainRequest" />
      <p pageid="221" ns="0" title="Bulk transfer domains from TransIP" />
      <p pageid="108" ns="0" title="Domain Management Contents" />
      <p pageid="109" ns="0" title="Domain Management DNSSEC" />
      <p pageid="104" ns="0" title="EPP Index" />
      <p pageid="121" ns="0" title="EPP XSD extensions opprov" />
      <p pageid="17" ns="0" title="Example Class API PHP" />
      <p pageid="122" ns="0" title="Example Script EPP PHP" />
      <p pageid="18" ns="0" title="Example Script PHP" />
    </allpages>
  </query>
  <query-continue>
    <allpages apfrom="Hidden Pages" />
  </query-continue>
</api>