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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.
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="20120201133038" timestamp="2012-02-01T13:30:38Z" ns="0" title="TEX/Favorites" />
        <page value="20120306181650" timestamp="2012-03-06T18:16:50Z" ns="0" title="Punkte, Vektoren und Geraden" />
        <page value="20120310143427" timestamp="2012-03-10T14:34:27Z" ns="0" title="Kurvenanpassung" />
        <page value="20120323115228" timestamp="2012-03-23T11:52:28Z" ns="0" title="Mathekurs Dold" />
        <page value="20120325213228" timestamp="2012-03-25T21:32:28Z" ns="0" title="Gauß-Algorithmus" />
        <page value="20120606130820" timestamp="2012-06-06T13:08:20Z" ns="0" title="Winkelfunktionen" />
        <page value="20120619065952" timestamp="2012-06-19T06:59:52Z" ns="0" title="Ebenengleichungen" />
        <page value="20120619070240" timestamp="2012-06-19T07:02:40Z" ns="0" title="Lineare Unabhängigkeit von Vektoren" />
        <page value="20120619114405" timestamp="2012-06-19T11:44:05Z" ns="0" title="Mathekurs Bittermann" />
        <page value="20120719080043" timestamp="2012-07-19T08:00:43Z" ns="0" title="Kurse Mathematik" />
      </results>
    </querypage>
  </query>
</api>