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="20100422120023" timestamp="2010-04-22T12:00:23Z" ns="0" title="Voorbeeld van Imagemap" />
        <page value="20100422211001" timestamp="2010-04-22T21:10:01Z" ns="0" title="Bronvermeldingen" />
        <page value="20110919122635" timestamp="2011-09-19T12:26:35Z" ns="0" title="Monumentenkaart" />
        <page value="20111014114603" timestamp="2011-10-14T11:46:03Z" ns="0" title="Klooster De Weyst" />
        <page value="20111216093618" timestamp="2011-12-16T09:36:18Z" ns="0" title="Overzicht van wandel- en fietsroutes" />
        <page value="20111216094018" timestamp="2011-12-16T09:40:18Z" ns="0" title="Fietsroute Bakel" />
        <page value="20120131113955" timestamp="2012-01-31T11:39:55Z" ns="0" title="Fietsroute: Mortels ommetje" />
        <page value="20120131114141" timestamp="2012-01-31T11:41:41Z" ns="0" title="Fietsroute: Nederheide" />
        <page value="20120131114219" timestamp="2012-01-31T11:42:19Z" ns="0" title="Fietsroute: Monumentenroute" />
        <page value="20120131114311" timestamp="2012-01-31T11:43:11Z" ns="0" title="Wandelroute: Esdonks kapelleke en Peelse Loop" />
      </results>
    </querypage>
  </query>
</api>