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="Björn_Åstrand|2604" />
  </query-continue>
  <query>
    <pages>
      <page pageid="2484" ns="0" title="Tomas Nordström" />
      <page pageid="2524" ns="0" title="Student projects" />
      <page pageid="2564" ns="0" title="CERES" />
      <page pageid="2639" ns="0" title="Application areas" />
      <page pageid="2657" ns="0" title="Tony Larsson" />
      <page pageid="2744" ns="0" title="Bertil Svensson" />
      <page pageid="2792" ns="0" title="Magnus Jonsson" />
      <page pageid="4599" ns="0" title="Physically small antennas" />
    </pages>
  </query>
</api>