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>
    <recentchanges rccontinue="2013-09-03T14:25:25Z|71" />
  </query-continue>
  <query>
    <recentchanges>
      <rc type="new" ns="0" title="Onde coloco os meus arquivos?" rcid="81" pageid="35" revid="80" old_revid="0" timestamp="2013-09-03T18:49:53Z" />
      <rc type="edit" ns="0" title="Página principal" rcid="80" pageid="12" revid="79" old_revid="49" timestamp="2013-09-03T18:46:58Z" />
      <rc type="new" ns="14" title="Categoria:CPanel" rcid="79" pageid="34" revid="78" old_revid="0" timestamp="2013-09-03T18:46:18Z" />
      <rc type="log" ns="6" title="Arquivo:Gerenciador de Arquivos4.gif" rcid="78" pageid="0" revid="0" old_revid="0" timestamp="2013-09-03T18:45:25Z" />
      <rc type="log" ns="6" title="Arquivo:Gerenciador de Arquivos3.gif" rcid="77" pageid="0" revid="0" old_revid="0" timestamp="2013-09-03T18:45:00Z" />
      <rc type="log" ns="6" title="Arquivo:Gerenciador de Arquivos2.gif" rcid="76" pageid="0" revid="0" old_revid="0" timestamp="2013-09-03T18:44:41Z" />
      <rc type="log" ns="6" title="Arquivo:Gerenciador de Arquivos1.gif" rcid="75" pageid="0" revid="0" old_revid="0" timestamp="2013-09-03T18:44:10Z" />
      <rc type="new" ns="0" title="Como enviar meus arquivos pelo cPanel?" rcid="74" pageid="29" revid="73" old_revid="0" timestamp="2013-09-03T18:43:47Z" />
      <rc type="edit" ns="0" title="Microsoft Outlook 2013" rcid="73" pageid="20" revid="72" old_revid="70" timestamp="2013-09-03T14:26:48Z" />
      <rc type="log" ns="6" title="Arquivo:Outlook2013-8.gif" rcid="72" pageid="0" revid="0" old_revid="0" timestamp="2013-09-03T14:25:42Z" />
    </recentchanges>
  </query>
</api>