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="20150725135606|Setup_line.png" />
  </query-continue>
  <query>
    <allimages>
      <img name="Licensing_dialog.png" timestamp="2015-10-22T01:09:42Z" user="Altadyna" url="http://altadyna.com/mwiki/images/6/6c/Licensing_dialog.png" descriptionurl="http://altadyna.com/mwiki/index.php?title=File:Licensing_dialog.png" ns="6" title="File:Licensing dialog.png" />
      <img name="Viewer_airfoil_05.png" timestamp="2015-07-25T19:57:24Z" user="Altadyna" url="http://altadyna.com/mwiki/images/a/a8/Viewer_airfoil_05.png" descriptionurl="http://altadyna.com/mwiki/index.php?title=File:Viewer_airfoil_05.png" ns="6" title="File:Viewer airfoil 05.png" />
      <img name="Viewer_airfoil_01.png" timestamp="2015-07-25T19:43:26Z" user="Altadyna" url="http://altadyna.com/mwiki/images/1/1a/Viewer_airfoil_01.png" descriptionurl="http://altadyna.com/mwiki/index.php?title=File:Viewer_airfoil_01.png" ns="6" title="File:Viewer airfoil 01.png" />
      <img name="Viewer_airfoil_02.png" timestamp="2015-07-25T19:42:51Z" user="Altadyna" url="http://altadyna.com/mwiki/images/b/b5/Viewer_airfoil_02.png" descriptionurl="http://altadyna.com/mwiki/index.php?title=File:Viewer_airfoil_02.png" ns="6" title="File:Viewer airfoil 02.png" />
      <img name="Viewer_airfoil_03.png" timestamp="2015-07-25T19:42:33Z" user="Altadyna" url="http://altadyna.com/mwiki/images/4/48/Viewer_airfoil_03.png" descriptionurl="http://altadyna.com/mwiki/index.php?title=File:Viewer_airfoil_03.png" ns="6" title="File:Viewer airfoil 03.png" />
      <img name="Viewer_airfoil_04.png" timestamp="2015-07-25T19:41:50Z" user="Altadyna" url="http://altadyna.com/mwiki/images/3/32/Viewer_airfoil_04.png" descriptionurl="http://altadyna.com/mwiki/index.php?title=File:Viewer_airfoil_04.png" ns="6" title="File:Viewer airfoil 04.png" />
      <img name="Setup_face_bc.png" timestamp="2015-07-25T15:02:09Z" user="Altadyna" url="http://altadyna.com/mwiki/images/0/0a/Setup_face_bc.png" descriptionurl="http://altadyna.com/mwiki/index.php?title=File:Setup_face_bc.png" ns="6" title="File:Setup face bc.png" />
      <img name="Setup_bc_panel.png" timestamp="2015-07-25T14:44:30Z" user="Altadyna" url="http://altadyna.com/mwiki/images/0/03/Setup_bc_panel.png" descriptionurl="http://altadyna.com/mwiki/index.php?title=File:Setup_bc_panel.png" ns="6" title="File:Setup bc panel.png" />
      <img name="Setup_import.png" timestamp="2015-07-25T14:23:51Z" user="Altadyna" url="http://altadyna.com/mwiki/images/c/c7/Setup_import.png" descriptionurl="http://altadyna.com/mwiki/index.php?title=File:Setup_import.png" ns="6" title="File:Setup import.png" />
      <img name="Setup_sphere.png" timestamp="2015-07-25T14:06:26Z" user="Altadyna" url="http://altadyna.com/mwiki/images/0/02/Setup_sphere.png" descriptionurl="http://altadyna.com/mwiki/index.php?title=File:Setup_sphere.png" ns="6" title="File:Setup sphere.png" />
    </allimages>
  </query>
</api>