You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20130604032159" timestamp="2013-06-04T03:21:59Z" ns="0" title="PPTP Windows Vista" />
        <page value="20130604032444" timestamp="2013-06-04T03:24:44Z" ns="0" title="PPTP Windows XP" />
        <page value="20130604223916" timestamp="2013-06-04T22:39:16Z" ns="0" title="PPTP Windows 8" />
        <page value="20130612010802" timestamp="2013-06-12T01:08:02Z" ns="0" title="VPN Lifeguard" />
        <page value="20130612011709" timestamp="2013-06-12T01:17:09Z" ns="0" title="PPTP iOS" />
        <page value="20130612190851" timestamp="2013-06-12T19:08:51Z" ns="0" title="UTorrent old" />
        <page value="20130612230252" timestamp="2013-06-12T23:02:52Z" ns="0" title="Encryption Mac Linux" />
        <page value="20130613034651" timestamp="2013-06-13T03:46:51Z" ns="0" title="PPTP ubuntu" />
        <page value="20130614131236" timestamp="2013-06-14T13:12:36Z" ns="0" title="Set Vuze to only download through the VPN" />
        <page value="20130821163638" timestamp="2013-08-21T16:36:38Z" ns="0" title="PPTP dd-wrt" />
      </results>
    </querypage>
  </query>
</api>