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="20130918222707" timestamp="2013-09-18T22:27:07Z" ns="0" title="Hans Sutter" />
        <page value="20130918222707" timestamp="2013-09-18T22:27:07Z" ns="0" title="Adolf Grieder" />
        <page value="20130918222707" timestamp="2013-09-18T22:27:07Z" ns="0" title="Matthias Buser" />
        <page value="20130918222707" timestamp="2013-09-18T22:27:07Z" ns="0" title="Heinrich Weber" />
        <page value="20130918222707" timestamp="2013-09-18T22:27:07Z" ns="0" title="Hermann Augustin" />
        <page value="20130918222707" timestamp="2013-09-18T22:27:07Z" ns="0" title="Niklaus Brodbeck" />
        <page value="20130918222707" timestamp="2013-09-18T22:27:07Z" ns="0" title="Wilhelm Balmer" />
        <page value="20140522130943" timestamp="2014-05-22T13:09:43Z" ns="0" title="Margrit Hedwig Berger" />
        <page value="20140522134103" timestamp="2014-05-22T13:41:03Z" ns="0" title="Sophie Blocher" />
        <page value="20140522142156" timestamp="2014-05-22T14:21:56Z" ns="0" title="Walter Ballmoos" />
      </results>
    </querypage>
  </query>
</api>