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>
    <allimages aicontinue="General_trn.pdf" />
  </query-continue>
  <query>
    <allimages>
      <img name="Banking_trn.pdf" timestamp="2011-01-20T02:46:28Z" url="http://trueerp.com/erpwiki/images/f/fc/Banking_trn.pdf" descriptionurl="http://trueerp.com/erpwiki/index.php/File:Banking_trn.pdf" ns="6" title="File:Banking trn.pdf" />
      <img name="Basic_features_trn.pdf" timestamp="2011-01-19T06:37:40Z" url="http://trueerp.com/erpwiki/images/3/38/Basic_features_trn.pdf" descriptionurl="http://trueerp.com/erpwiki/index.php/File:Basic_features_trn.pdf" ns="6" title="File:Basic features trn.pdf" />
      <img name="Budget_trn.pdf" timestamp="2011-01-21T04:20:29Z" url="http://trueerp.com/erpwiki/images/c/c9/Budget_trn.pdf" descriptionurl="http://trueerp.com/erpwiki/index.php/File:Budget_trn.pdf" ns="6" title="File:Budget trn.pdf" />
      <img name="Button_image.png" timestamp="2011-01-18T23:43:59Z" url="http://trueerp.com/erpwiki/images/d/de/Button_image.png" descriptionurl="http://trueerp.com/erpwiki/index.php/File:Button_image.png" ns="6" title="File:Button image.png" />
      <img name="Button_link.png" timestamp="2011-01-18T23:28:42Z" url="http://trueerp.com/erpwiki/images/c/c0/Button_link.png" descriptionurl="http://trueerp.com/erpwiki/index.php/File:Button_link.png" ns="6" title="File:Button link.png" />
      <img name="Crm_trn.pdf" timestamp="2011-01-20T01:53:48Z" url="http://trueerp.com/erpwiki/images/2/2f/Crm_trn.pdf" descriptionurl="http://trueerp.com/erpwiki/index.php/File:Crm_trn.pdf" ns="6" title="File:Crm trn.pdf" />
      <img name="Customer_payments.pdf" timestamp="2011-01-20T02:32:12Z" url="http://trueerp.com/erpwiki/images/a/ab/Customer_payments.pdf" descriptionurl="http://trueerp.com/erpwiki/index.php/File:Customer_payments.pdf" ns="6" title="File:Customer payments.pdf" />
      <img name="Employee_trn.pdf" timestamp="2011-01-19T06:56:26Z" url="http://trueerp.com/erpwiki/images/b/b7/Employee_trn.pdf" descriptionurl="http://trueerp.com/erpwiki/index.php/File:Employee_trn.pdf" ns="6" title="File:Employee trn.pdf" />
      <img name="File_maintenance.pdf" timestamp="2011-01-20T01:34:55Z" url="http://trueerp.com/erpwiki/images/4/4a/File_maintenance.pdf" descriptionurl="http://trueerp.com/erpwiki/index.php/File:File_maintenance.pdf" ns="6" title="File:File maintenance.pdf" />
      <img name="Fixed_assets_trn.pdf" timestamp="2011-01-21T04:01:20Z" url="http://trueerp.com/erpwiki/images/a/ad/Fixed_assets_trn.pdf" descriptionurl="http://trueerp.com/erpwiki/index.php/File:Fixed_assets_trn.pdf" ns="6" title="File:Fixed assets trn.pdf" />
    </allimages>
  </query>
</api>