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="11" ns="0" title="Bash foreach" />
      <p pageid="358" ns="0" title="Black-hat" />
      <p pageid="6" ns="0" title="CPAN" />
      <p pageid="385" ns="0" title="CSR, generating" />
      <p pageid="7" ns="0" title="Cron, logging" />
      <p pageid="27" ns="0" title="Dell Mini 10v" />
      <p pageid="416" ns="0" title="Dovecot, SSL certificate conversion" />
      <p pageid="384" ns="0" title="Dovecot, enforcing retention policy" />
      <p pageid="377" ns="0" title="Enable Gateway" />
      <p pageid="109" ns="0" title="Escaped to multi-line format" />
    </allpages>
  </query>
  <query-continue>
    <allpages apfrom="Exim, Virtual Domain Setup" />
  </query-continue>
</api>