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>
    <alllinks galcontinue="Calendrier" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="Be-x-old:Шаблён:Партал" missing="" />
      <page ns="0" title="Belette d’Europe" missing="" />
      <page ns="0" title="Browsebar/Gestion" missing="" />
      <page ns="0" title="Browsebar/Patrimoine minier" missing="" />
      <page ns="0" title="Bs:Šablon:Portal" missing="" />
      <page ns="0" title="Bulgrane rampante" missing="" />
      <page ns="0" title="Ca:Plantilla:Portal" missing="" />
      <page ns="0" title="Ca:Template:For loop" missing="" />
      <page pageid="891" ns="0" title="Baguage Merle à plastron" />
      <page pageid="604" ns="0" title="CCCO" />
    </pages>
  </query>
</api>