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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.
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<?xml version="1.0"?>
<api>
  <query-continue>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20091221142225" timestamp="2009-12-21T14:22:25Z" ns="0" title="2009-12-1" />
        <page value="20100106200106" timestamp="2010-01-06T20:01:06Z" ns="0" title="2010-1-5" />
        <page value="20100108120857" timestamp="2010-01-08T12:08:57Z" ns="0" title="Promotiemateriaal" />
        <page value="20100120111936" timestamp="2010-01-20T11:19:36Z" ns="0" title="Kostenberekening" />
        <page value="20100129223704" timestamp="2010-01-29T22:37:04Z" ns="0" title="Hackerspaces.nl New Years Party 2010" />
        <page value="20100303205019" timestamp="2010-03-03T20:50:19Z" ns="0" title="Bijeenkomst 23 Februari 2010" />
        <page value="20100309204539" timestamp="2010-03-09T20:45:39Z" ns="0" title="Stichting" />
        <page value="20100311065553" timestamp="2010-03-11T06:55:53Z" ns="0" title="Bijeenkomst 9 Maart 2010" />
        <page value="20100317121945" timestamp="2010-03-17T12:19:45Z" ns="0" title="Vrijdagavondborrel" />
        <page value="20100323194240" timestamp="2010-03-23T19:42:40Z" ns="0" title="Bijeenkomst 23 Maart 2010" />
      </results>
    </querypage>
  </query>
</api>