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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="20090106124203" timestamp="2009-01-06T12:42:03Z" ns="0" title="Strategischer Prozessverantwortlicher" />
        <page value="20090106125709" timestamp="2009-01-06T12:57:09Z" ns="0" title="Operativer Prozessverantwortlicher" />
        <page value="20090106130547" timestamp="2009-01-06T13:05:47Z" ns="0" title="Prozessmodellierer" />
        <page value="20090106130732" timestamp="2009-01-06T13:07:32Z" ns="0" title="Enterprise Architect" />
        <page value="20090106131404" timestamp="2009-01-06T13:14:04Z" ns="0" title="Prozessimplementierer" />
        <page value="20090121080211" timestamp="2009-01-21T08:02:11Z" ns="0" title="Prozessbeteiligter" />
        <page value="20090209210944" timestamp="2009-02-09T21:09:44Z" ns="0" title="BPMN-Stakeholder" />
        <page value="20090330215709" timestamp="2009-03-30T21:57:09Z" ns="0" title="BPMN Best Practices" />
        <page value="20090420095343" timestamp="2009-04-20T09:53:43Z" ns="0" title="Konsistenz von Prozessmodellen" />
        <page value="20090603131759" timestamp="2009-06-03T13:17:59Z" ns="0" title="BPMN 2.0" />
      </results>
    </querypage>
  </query>
</api>