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="Business_Team/Beta_Program/Technical_Training_Materials|422" />
  </query-continue>
  <query>
    <alllinks>
      <l ns="0" title="Business Team" />
      <l ns="0" title="Business Team/Adoption" />
      <l ns="0" title="Business Team/Beta Program" />
      <l ns="0" title="Business Team/Beta Program/Doc and Email Blurb" />
      <l ns="0" title="Business Team/Beta Program/Draft Orientation Slides" />
      <l ns="0" title="Business Team/Beta Program/Draft v2 Orientation Slides" />
      <l ns="0" title="Business Team/Beta Program/Feedback" />
      <l ns="0" title="Business Team/Beta Program/Final Orientation Slides" />
      <l ns="0" title="Business Team/Beta Program/Recording Link Beta Orientation Call Feb 3 2011" />
      <l ns="0" title="Business Team/Beta Program/Sites" />
    </alllinks>
  </query>
</api>