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="20140310201538" timestamp="2014-03-10T20:15:38Z" ns="0" title="MediaWikiSetup" />
        <page value="20140310203159" timestamp="2014-03-10T20:31:59Z" ns="0" title="Patient Recovery Reimbursement" />
        <page value="20140310203306" timestamp="2014-03-10T20:33:06Z" ns="0" title="Patient Recovery Science" />
        <page value="20140310203400" timestamp="2014-03-10T20:34:00Z" ns="0" title="Patient Recovery Technology" />
        <page value="20140320144253" timestamp="2014-03-20T14:42:53Z" ns="0" title="Recovery Team Factors" />
        <page value="20140407153624" timestamp="2014-04-07T15:36:24Z" ns="0" title="Recovery Monitoring Factors" />
        <page value="20140423202111" timestamp="2014-04-23T20:21:11Z" ns="0" title="CMS-HCC Risk Adjustments" />
        <page value="20140423204545" timestamp="2014-04-23T20:45:45Z" ns="0" title="CMS-HCC Demographic Coefficients" />
        <page value="20140423211525" timestamp="2014-04-23T21:15:25Z" ns="0" title="CMS-HCC Disease Coefficients" />
        <page value="20140423214924" timestamp="2014-04-23T21:49:24Z" ns="0" title="CMS-HCC Disease Interactions" />
      </results>
    </querypage>
  </query>
</api>