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="CEED|1882" />
  </query-continue>
  <query>
    <alllinks>
      <l ns="0" title="Build configuration for Irrlicht" />
      <l ns="0" title="Build configuration for Irrlicht" />
      <l ns="0" title="Build from source for Win32" />
      <l ns="0" title="Building CEGUI for Ogre / OgreRenderer" />
      <l ns="0" title="Building from source" />
      <l ns="0" title="CEED" />
      <l ns="0" title="CEED" />
      <l ns="0" title="CEED" />
      <l ns="0" title="CEED" />
      <l ns="0" title="CEED" />
    </alllinks>
  </query>
</api>