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="20070926121012" timestamp="2007-09-26T12:10:12Z" ns="0" title="Aktuality" />
        <page value="20080226065958" timestamp="2008-02-26T06:59:58Z" ns="0" title="Ovocie a zelenina" />
        <page value="20081016084032" timestamp="2008-10-16T08:40:32Z" ns="0" title="Linky" />
        <page value="20090510124516" timestamp="2009-05-10T12:45:16Z" ns="0" title="Jasle Hollého" />
        <page value="20090510143546" timestamp="2009-05-10T14:35:46Z" ns="0" title="Jasle Drobček Nitra" />
        <page value="20090511074139" timestamp="2009-05-11T07:41:39Z" ns="0" title="Burza detských potrieb" />
        <page value="20090511074525" timestamp="2009-05-11T07:45:25Z" ns="0" title="Burza práce" />
        <page value="20090511074541" timestamp="2009-05-11T07:45:41Z" ns="0" title="Ponuka práce" />
        <page value="20090511074659" timestamp="2009-05-11T07:46:59Z" ns="0" title="Dopyt práce" />
        <page value="20090511074806" timestamp="2009-05-11T07:48:06Z" ns="0" title="Predaj" />
      </results>
    </querypage>
  </query>
  <query-continue>
    <querypage qpoffset="10" />
  </query-continue>
</api>