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HTML is good for debugging, but probably is not suitable for your application.
Please see "format" parameter documentation at the API help for more information.
<?xml version="1.0" encoding="utf-8"?>
<api>
  <query-continue>
    <allpages apfrom="Cómo borrar registros" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="4964" ns="0" title="Biografia" />
      <p pageid="7924" ns="0" title="Bragazza" />
      <p pageid="30993" ns="0" title="Campana" />
      <p pageid="27173" ns="0" title="Categoria:Ciudades" />
      <p pageid="33637" ns="0" title="Categoria:Plantillas" />
      <p pageid="2818" ns="0" title="Chile" />
      <p pageid="24993" ns="0" title="Colombia" />
      <p pageid="55251" ns="0" title="Considering Immediate Products In Judi Online" />
      <p pageid="6209" ns="0" title="Costa Rica" />
      <p pageid="14926" ns="0" title="Crear un arbol" />
    </allpages>
  </query>
</api>