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="18" ns="0" title="Cron" />
      <p pageid="52" ns="0" title="Disk Utilities" />
      <p pageid="7" ns="0" title="Fail2ban" />
      <p pageid="61" ns="0" title="Flush ARP cache" />
      <p pageid="54" ns="0" title="General System Administrator Quick Reference" />
      <p pageid="63" ns="0" title="Git" />
      <p pageid="53" ns="0" title="HP RAID controller" />
      <p pageid="58" ns="0" title="IOS" />
      <p pageid="25" ns="0" title="Iptables" />
      <p pageid="49" ns="0" title="KDE" />
    </allpages>
  </query>
  <query-continue>
    <allpages apfrom="Kenel and Boot Troubleshooting" />
  </query-continue>
</api>