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 alcontinue="B4_Executive_Announcements_2014|1566" />
  </query-continue>
  <query>
    <alllinks>
      <l ns="0" title="B1 RA Announcements 2013" />
      <l ns="0" title="B1 RA Announcements 2014" />
      <l ns="0" title="B1 RA Announcements 2015" />
      <l ns="0" title="B2 RA Discussion 2013" />
      <l ns="0" title="B2 RA Discussion 2014" />
      <l ns="0" title="B2 RA Discussion 2015" />
      <l ns="0" title="B3 SC Announcements 2013" />
      <l ns="0" title="B3 SC Announcements 2014" />
      <l ns="0" title="B3 SC Announcements 2015" />
      <l ns="0" title="B4 Executive Announcements 2013" />
    </alllinks>
  </query>
</api>