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" />
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  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20110624134713" timestamp="2011-06-24T13:47:13Z" ns="0" title="Emacs and slime reference" />
        <page value="20110627213701" timestamp="2011-06-27T21:37:01Z" ns="0" title="Moving a SVN Repository" />
        <page value="20110627234853" timestamp="2011-06-27T23:48:53Z" ns="0" title="Creating a SVN Repository" />
        <page value="20110628131511" timestamp="2011-06-28T13:15:11Z" ns="0" title="Setup a SVN Server on a Shared Hosting" />
        <page value="20110705145241" timestamp="2011-07-05T14:52:41Z" ns="0" title="Simple Guide to SVN Client" />
        <page value="20110901011751" timestamp="2011-09-01T01:17:51Z" ns="0" title="Programming Tutorials" />
        <page value="20110901200339" timestamp="2011-09-01T20:03:39Z" ns="0" title="Small jQuery Reference" />
        <page value="20111121151810" timestamp="2011-11-21T15:18:10Z" ns="0" title="Administration Tutorials" />
        <page value="20111121152558" timestamp="2011-11-21T15:25:58Z" ns="0" title="Install Apache and PHP to do Secure h264 Pseudo Streaming" />
        <page value="20120329104349" timestamp="2012-03-29T10:43:49Z" ns="0" title="Rip Video DVD that is not Finalized" />
      </results>
    </querypage>
  </query>
</api>