You are looking at the HTML representation of the XML format.
HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <allimages>
      <img name="BeamLocking.png" timestamp="2007-01-31T18:51:16Z" url="https://nemesis-project.org/images/BeamLocking.png" descriptionurl="https://nemesis-project.org/index.php/File:BeamLocking.png" ns="6" title="File:BeamLocking.png" />
      <img name="Crystal_128_down.png" timestamp="2007-01-10T17:51:33Z" url="https://nemesis-project.org/images/Crystal_128_down.png" descriptionurl="https://nemesis-project.org/index.php/File:Crystal_128_down.png" ns="6" title="File:Crystal 128 down.png" />
      <img name="Crystal_128_kuser.png" timestamp="2007-01-11T03:57:49Z" url="https://nemesis-project.org/images/Crystal_128_kuser.png" descriptionurl="https://nemesis-project.org/index.php/File:Crystal_128_kuser.png" ns="6" title="File:Crystal 128 kuser.png" />
      <img name="Crystal_Clear_app_display.png" timestamp="2007-01-10T17:51:42Z" url="https://nemesis-project.org/images/Crystal_Clear_app_display.png" descriptionurl="https://nemesis-project.org/index.php/File:Crystal_Clear_app_display.png" ns="6" title="File:Crystal Clear app display.png" />
      <img name="Crystal_Clear_app_konsole.png" timestamp="2007-01-10T17:55:49Z" url="https://nemesis-project.org/images/Crystal_Clear_app_konsole.png" descriptionurl="https://nemesis-project.org/index.php/File:Crystal_Clear_app_konsole.png" ns="6" title="File:Crystal Clear app konsole.png" />
      <img name="Crystal_Clear_app_personal.png" timestamp="2007-01-29T11:32:21Z" url="https://nemesis-project.org/images/Crystal_Clear_app_personal.png" descriptionurl="https://nemesis-project.org/index.php/File:Crystal_Clear_app_personal.png" ns="6" title="File:Crystal Clear app personal.png" />
      <img name="Dome1.png" timestamp="2007-01-18T17:38:15Z" url="https://nemesis-project.org/images/Dome1.png" descriptionurl="https://nemesis-project.org/index.php/File:Dome1.png" ns="6" title="File:Dome1.png" />
      <img name="Dome2.png" timestamp="2007-01-18T17:38:27Z" url="https://nemesis-project.org/images/Dome2.png" descriptionurl="https://nemesis-project.org/index.php/File:Dome2.png" ns="6" title="File:Dome2.png" />
      <img name="Dome3.png" timestamp="2007-01-18T17:38:39Z" url="https://nemesis-project.org/images/Dome3.png" descriptionurl="https://nemesis-project.org/index.php/File:Dome3.png" ns="6" title="File:Dome3.png" />
      <img name="Example_Quad4i_01.png" timestamp="2008-01-08T23:58:53Z" url="https://nemesis-project.org/images/Example_Quad4i_01.png" descriptionurl="https://nemesis-project.org/index.php/File:Example_Quad4i_01.png" ns="6" title="File:Example Quad4i 01.png" />
    </allimages>
  </query>
  <query-continue>
    <allimages aifrom="Example Quad4i 02.png" />
  </query-continue>
</api>