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>
    <protectedtitles>
      <pt ns="0" title="Bio Jobs In India" timestamp="2011-01-29T12:03:32Z" level="sysop" />
      <pt ns="0" title="Bio Medical Engineering Jobs" timestamp="2011-01-29T12:02:09Z" level="sysop" />
      <pt ns="0" title="Bio Medical Engineer Jobs" timestamp="2011-01-29T12:00:14Z" level="sysop" />
      <pt ns="0" title="Bio Medical Jobs" timestamp="2011-01-29T11:57:16Z" level="sysop" />
      <pt ns="4" title="SuperTux:General disclaimer" timestamp="2010-10-27T21:43:20Z" level="sysop" />
      <pt ns="0" title="Supertux download" timestamp="2010-05-03T15:36:06Z" level="sysop" />
    </protectedtitles>
  </query>
</api>