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>
    <alllinks galcontinue="Bangladesh|1717" />
  </query-continue>
  <query>
    <pages>
      <page pageid="436" ns="0" title="Browse Cases" />
      <page pageid="679" ns="0" title="Indus River" />
      <page pageid="1044" ns="0" title="Pakistan" />
      <page pageid="2225" ns="114" title="ASI:Lessons From the Baglihar Case" />
      <page pageid="2309" ns="0" title="Yarlung Zangbo / Brahmaputra River: Competing Priorities of Hydropower and Agriculture" />
    </pages>
  </query>
</api>