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>
    <querypage name="Ancientpages">
      <results>
        <page value="20141013005436" timestamp="2014-10-13T00:54:36Z" ns="0" title="Setting up a windows machine for compiling the firmware" />
        <page value="20141013013315" timestamp="2014-10-13T01:33:15Z" ns="0" title="Getting the firmware with Eclipse" />
        <page value="20141016074431" timestamp="2014-10-16T07:44:31Z" ns="0" title="Compiling the firmware with Eclipse" />
        <page value="20141016125005" timestamp="2014-10-16T12:50:05Z" ns="0" title="Main Page" />
      </results>
    </querypage>
  </query>
</api>