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="20140121225320" timestamp="2014-01-21T22:53:20Z" ns="0" title="Nueva" />
        <page value="20140325124032" timestamp="2014-03-25T12:40:32Z" ns="0" title="Manual" />
        <page value="20140407194919" timestamp="2014-04-07T19:49:19Z" ns="0" title="COMPRAS" />
        <page value="20140407202949" timestamp="2014-04-07T20:29:49Z" ns="0" title="VENTAS" />
        <page value="20140421230238" timestamp="2014-04-21T23:02:38Z" ns="0" title="Manual Sistema Tributario" />
        <page value="20140421230435" timestamp="2014-04-21T23:04:35Z" ns="0" title="Manual Sistema Financiero" />
        <page value="20140507170810" timestamp="2014-05-07T17:08:10Z" ns="0" title="Manual Sistema Contable" />
        <page value="20140704190641" timestamp="2014-07-04T19:06:41Z" ns="0" title="MANUAL DE GENERACIÓN SET DE PRUEBAS" />
        <page value="20140708165209" timestamp="2014-07-08T16:52:09Z" ns="0" title="MANUAL DE GENERACIÓN" />
        <page value="20140717232114" timestamp="2014-07-17T23:21:14Z" ns="0" title="MANUAL PARA OBTENCIÓN FIRMA ELECTRÓNICA CON E-CertCHILE" />
      </results>
    </querypage>
  </query>
</api>