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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.
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<?xml version="1.0"?>
<api>
  <query-continue>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20140723233129" timestamp="2014-07-23T23:31:29Z" ns="0" title="Metadatos requeridos" />
        <page value="20141111154011" timestamp="2014-11-11T15:40:11Z" ns="0" title="Dbf, prj, shp, shx." />
        <page value="20150225202036" timestamp="2015-02-25T20:20:36Z" ns="0" title="User Guides" />
        <page value="20150302154129" timestamp="2015-03-02T15:41:29Z" ns="0" title="Guia GeoNode en Linea" />
        <page value="20150615125904" timestamp="2015-06-15T12:59:04Z" ns="0" title="Avance de Trabajo en Indicadores" />
        <page value="20150626201019" timestamp="2015-06-26T20:10:19Z" ns="0" title="Informativo de Observatorio - Agenda de Ediciones" />
        <page value="20150703144932" timestamp="2015-07-03T14:49:32Z" ns="0" title="Guias" />
        <page value="20151029204654" timestamp="2015-10-29T20:46:54Z" ns="0" title="Data Sources" />
        <page value="20160106202606" timestamp="2016-01-06T20:26:06Z" ns="0" title="Glosario" />
        <page value="20160812204257" timestamp="2016-08-12T20:42:57Z" ns="0" title="Observatorio de Barrios Sustentables - MINVU" />
      </results>
    </querypage>
  </query>
</api>