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="2011-10-28 07:06:56+00" timestamp="2011-10-28T07:06:56Z" ns="0" title="Upload Drupal 7 modules" />
        <page value="2011-10-29 22:04:47+00" timestamp="2011-10-29T22:04:47Z" ns="0" title="Recent Changes" />
        <page value="2011-10-29 22:08:09+00" timestamp="2011-10-29T22:08:09Z" ns="0" title="Special page" />
        <page value="2011-10-29 23:22:40+00" timestamp="2011-10-29T23:22:40Z" ns="0" title="Stub page" />
        <page value="2011-10-29 23:32:42+00" timestamp="2011-10-29T23:32:42Z" ns="0" title="Tag link" />
        <page value="2011-10-29 23:40:41+00" timestamp="2011-10-29T23:40:41Z" ns="0" title="Tag page" />
        <page value="2011-10-29 23:50:49+00" timestamp="2011-10-29T23:50:49Z" ns="0" title="Dead link" />
        <page value="2011-10-30 00:08:37+00" timestamp="2011-10-30T00:08:37Z" ns="0" title="God" />
        <page value="2011-10-30 00:09:44+00" timestamp="2011-10-30T00:09:44Z" ns="0" title="Harms of theism" />
        <page value="2011-10-30 01:18:32+00" timestamp="2011-10-30T01:18:32Z" ns="0" title="Threaded discussions" />
      </results>
    </querypage>
  </query>
</api>