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>
    <querypage name="Ancientpages">
      <results>
        <page value="20130126150303" timestamp="2013-01-26T15:03:03Z" ns="0" title="Jan Laureijnssen" />
        <page value="20130126150427" timestamp="2013-01-26T15:04:27Z" ns="0" title="Willem Couwenbergh" />
        <page value="20130126150510" timestamp="2013-01-26T15:05:10Z" ns="0" title="Hendrik van der Krabben" />
        <page value="20130126150543" timestamp="2013-01-26T15:05:43Z" ns="0" title="Willem van der Krabben" />
        <page value="20130126183249" timestamp="2013-01-26T18:32:49Z" ns="0" title="Johannes van der Krabben" />
        <page value="20130126190345" timestamp="2013-01-26T19:03:45Z" ns="0" title="Hendrik van der Krabben 2" />
        <page value="20130126190652" timestamp="2013-01-26T19:06:52Z" ns="0" title="Willem van der Krabben 2" />
        <page value="20130126201924" timestamp="2013-01-26T20:19:24Z" ns="0" title="Hendrik de Weert" />
        <page value="20130127080552" timestamp="2013-01-27T08:05:52Z" ns="0" title="Johannes Bruls" />
        <page value="20130127094944" timestamp="2013-01-27T09:49:44Z" ns="0" title="G. Joossen" />
      </results>
    </querypage>
  </query>
  <query-continue>
    <querypage qpoffset="10" />
  </query-continue>
</api>