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="20141020231738" timestamp="2014-10-20T23:17:38Z" ns="0" title="Módulo Clientes:Nuevo Cliente" />
        <page value="20141020231806" timestamp="2014-10-20T23:18:06Z" ns="0" title="Módulo Clientes:Editar cliente" />
        <page value="20141020231853" timestamp="2014-10-20T23:18:53Z" ns="0" title="Módulo Clientes:Importar Clientes" />
        <page value="20141023233239" timestamp="2014-10-23T23:32:39Z" ns="0" title="Módulo Cobros:Asociar Cobro" />
        <page value="20141112193827" timestamp="2014-11-12T19:38:27Z" ns="0" title="Módulo Rubros:Ver Todos" />
        <page value="20141112210457" timestamp="2014-11-12T21:04:57Z" ns="0" title="Módulo Comprobantes:Ver Todos" />
        <page value="20141113215014" timestamp="2014-11-13T21:50:14Z" ns="0" title="Módulo Rubros:Editar Rubro" />
        <page value="20141113221843" timestamp="2014-11-13T22:18:43Z" ns="0" title="Módulo Clientes:Ver Todos" />
        <page value="20141114191636" timestamp="2014-11-14T19:16:36Z" ns="0" title="Módulo Cobros:Editar Cobro" />
        <page value="20141114193654" timestamp="2014-11-14T19:36:54Z" ns="0" title="Módulo Presupuestos:Ver Todos" />
      </results>
    </querypage>
  </query>
</api>