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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>
    <allredirects garcontinue="Charlotte-Rose_de_Caumont_de_La_Force/Philibert_Riballier_et_Catherine_Cosson|3361" />
  </query-continue>
  <query>
    <pages>
      <page pageid="2811" ns="0" title="Castelloza/Fortunée Briquet" />
      <page pageid="2812" ns="0" title="Castelloza/Fortunée Briquet (Après 1100-Avant 1200)" />
      <page pageid="2883" ns="0" title="Blanche de France" />
      <page pageid="3047" ns="0" title="Catherine de Lorraine (1585-161)" />
      <page pageid="3048" ns="0" title="Catherine de Lorraine (1585-161)/Hilarion de Coste" />
      <page pageid="3208" ns="0" title="Charlotte de Montmorency/Pierre-Joseph Boudier de Villemert" />
      <page pageid="3359" ns="0" title="Charlotte-Rose de Caumont de Laforce" />
      <page pageid="3360" ns="0" title="Charlotte-Rose de Caumont de Laforce/Fortunée Briquet" />
      <page pageid="3511" ns="0" title="Charlotte-Catherine Cosson de La Cressionnière" />
      <page pageid="3705" ns="0" title="Blanche de Bourgogne (Vers 1294-1326)" />
    </pages>
  </query>
</api>