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="California_T4_Westfalia|1198" />
  </query-continue>
  <query>
    <pages>
      <page pageid="15" ns="0" title="Multivan T4" />
      <page pageid="17" ns="0" title="California T4 Westfalia" />
      <page pageid="62" ns="6" title="Fichier:T4-icon2.jpg" />
      <page pageid="516" ns="0" title="Extincteur à bord" />
      <page pageid="767" ns="0" title="Bloc cuisine California T4" />
      <page pageid="783" ns="0" title="Centrale de commande California T4" />
      <page pageid="954" ns="0" title="Démontage bloc d&#039;instrumentation après 2000" />
      <page pageid="1099" ns="0" title="Boite de vitesse T4" />
      <page pageid="1408" ns="0" title="Chauffage : régulation tactile" />
      <page pageid="1533" ns="12" title="Aide:Contribuer au wiki" />
    </pages>
  </query>
</api>