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="Bay_Window_Prop_01|496" />
  </query-continue>
  <query>
    <alllinks>
      <l ns="0" title="Banister Full Height Left 01" />
      <l ns="0" title="Banister Full Height Right 01" />
      <l ns="0" title="Banister Left" />
      <l ns="0" title="Banister Right" />
      <l ns="0" title="Basic Ship Systems" />
      <l ns="0" title="Basic Ship Systems" />
      <l ns="0" title="Bay Window" />
      <l ns="0" title="Bay Window - Type II" />
      <l ns="0" title="Bay Window - Type III" />
      <l ns="0" title="Bay Window - Type IV" />
    </alllinks>
  </query>
</api>