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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="20100415135948" timestamp="2010-04-15T13:59:48Z" ns="0" title="Anmeldung im Wiki" />
        <page value="20100415141029" timestamp="2010-04-15T14:10:29Z" ns="0" title="Grundlegende Richtlinien" />
        <page value="20100417194041" timestamp="2010-04-17T19:40:41Z" ns="0" title="Dateien hochladen" />
        <page value="20100417200232" timestamp="2010-04-17T20:02:32Z" ns="0" title="Text einstellen" />
        <page value="20100423115806" timestamp="2010-04-23T11:58:06Z" ns="0" title="Quizz der Woche 2" />
        <page value="20100423205346" timestamp="2010-04-23T20:53:46Z" ns="0" title="Eine dynamische Konstruktion einbauen" />
        <page value="20100425072427" timestamp="2010-04-25T07:24:27Z" ns="0" title="Auftrag der Woche, Quizz der Woche, Übungsaufgaben etc." />
        <page value="20100425095244" timestamp="2010-04-25T09:52:44Z" ns="0" title="Übungsaufgaben (Übung)" />
        <page value="20100425095309" timestamp="2010-04-25T09:53:09Z" ns="0" title="Übungsaufgaben (Tutorium)" />
        <page value="20100429203123" timestamp="2010-04-29T20:31:23Z" ns="0" title="Auftrag der Woche 3" />
      </results>
    </querypage>
  </query>
</api>