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="20131111173620" timestamp="2013-11-11T17:36:20Z" ns="0" title="Corrigindo warnings do dotProject no PHP 5.3.x" />
        <page value="20131113162415" timestamp="2013-11-13T16:24:15Z" ns="0" title="Personalizando a extensãoo jsp para html no Tomcat" />
        <page value="20131122183055" timestamp="2013-11-22T18:30:55Z" ns="0" title="Como corrigir o Erro no PHPBB" />
        <page value="20131122183307" timestamp="2013-11-22T18:33:07Z" ns="0" title="Como testar os DNS" />
        <page value="20131122184645" timestamp="2013-11-22T18:46:45Z" ns="0" title="Consumo memoria java queda servidor" />
        <page value="20131126193345" timestamp="2013-11-26T19:33:45Z" ns="0" title="Extensao personalizada jsp para html" />
        <page value="20131127181527" timestamp="2013-11-27T18:15:27Z" ns="0" title="Phpprojekt configurando php.ini para executar" />
        <page value="20131127182955" timestamp="2013-11-27T18:29:55Z" ns="0" title="Procedimentos uso memoria excedido servico java" />
        <page value="20140409164940" timestamp="2014-04-09T16:49:40Z" ns="0" title="Mudança da porta 25 para a 587 do SMTP" />
        <page value="20140409165122" timestamp="2014-04-09T16:51:22Z" ns="0" title="Problema com cPHulk e bloqueio no acesso ao painel" />
      </results>
    </querypage>
  </query>
</api>