You are looking at the HTML representation of the XML format.
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="20100515130353" timestamp="2010-05-15T13:03:53Z" ns="0" title="Anne de Bretagne/Pierre-Joseph Boudier de Villemert" />
        <page value="20100515130712" timestamp="2010-05-15T13:07:12Z" ns="0" title="Anne de Bretagne/Fortunée Briquet" />
        <page value="20100515150215" timestamp="2010-05-15T15:02:15Z" ns="0" title="Anne de Bretagne/Hilarion de Coste" />
        <page value="20100521120420" timestamp="2010-05-21T12:04:20Z" ns="0" title="TestVoirHomonymes" />
        <page value="20100528100333" timestamp="2010-05-28T10:03:33Z" ns="0" title="TestBoiteDeroulante" />
        <page value="20100529161821" timestamp="2010-05-29T16:18:21Z" ns="0" title="Liste des Duchesses" />
        <page value="20100529162435" timestamp="2010-05-29T16:24:35Z" ns="0" title="Duchesse Anne" />
        <page value="20100529162605" timestamp="2010-05-29T16:26:05Z" ns="0" title="Marie-Antoinette-Josephe-Jeanne d&#039;Autriche-Lorraine" />
        <page value="20100531162458" timestamp="2010-05-31T16:24:58Z" ns="0" title="Marguerite de Navarre" />
        <page value="20100531162644" timestamp="2010-05-31T16:26:44Z" ns="0" title="Marguerite de Valois" />
      </results>
    </querypage>
  </query>
</api>