You are looking at the HTML representation of the XML format.
HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20060221232009" timestamp="2006-02-21T23:20:09Z" ns="0" title="FOSDEM (2006)" />
        <page value="20060227101854" timestamp="2006-02-27T10:18:54Z" ns="0" title="CSC CAF (Fête de l&#039;internet 2006)" />
        <page value="20060302141634" timestamp="2006-03-02T14:16:34Z" ns="0" title="Gestion de la présence au local" />
        <page value="20060305125930" timestamp="2006-03-05T12:59:30Z" ns="0" title="COW Album Photos" />
        <page value="20060308230647" timestamp="2006-03-08T23:06:47Z" ns="0" title="COW Module trombinoscope" />
        <page value="20060309201245" timestamp="2006-03-09T20:12:45Z" ns="0" title="COW Option debug" />
        <page value="20060312173551" timestamp="2006-03-12T17:35:51Z" ns="0" title="COW Carte des membres" />
        <page value="20060312174156" timestamp="2006-03-12T17:41:56Z" ns="0" title="COW FAQ" />
        <page value="20060319150646" timestamp="2006-03-19T15:06:46Z" ns="0" title="COC Utilisation du service e-mail linux62" />
        <page value="20060325192050" timestamp="2006-03-25T19:20:50Z" ns="0" title="IUT de Lens (Mars 2006)" />
      </results>
    </querypage>
  </query>
  <query-continue>
    <querypage qpoffset="10" />
  </query-continue>
</api>