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="20120304150005" timestamp="2012-03-04T15:00:05Z" ns="0" title="API Feature Planning" />
        <page value="20120312210105" timestamp="2012-03-12T21:01:05Z" ns="0" title="API Implementation Statuses" />
        <page value="20120312210611" timestamp="2012-03-12T21:06:11Z" ns="0" title="Account Status" />
        <page value="20120424144023" timestamp="2012-04-24T14:40:23Z" ns="0" title="Third Party Authentication" />
        <page value="20120424144629" timestamp="2012-04-24T14:46:29Z" ns="0" title="Authentication Token" />
        <page value="20120426082404" timestamp="2012-04-26T08:24:04Z" ns="0" title="Player Info" />
        <page value="20120426223619" timestamp="2012-04-26T22:36:19Z" ns="0" title="StatusSubCode" />
        <page value="20120611060238" timestamp="2012-06-11T06:02:38Z" ns="0" title="Common Server Configuration Knobs" />
        <page value="20120611060356" timestamp="2012-06-11T06:03:56Z" ns="0" title="Dual stack operation" />
        <page value="20120611132936" timestamp="2012-06-11T13:29:36Z" ns="0" title="Server Status" />
      </results>
    </querypage>
  </query>
</api>