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>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20080417180649" timestamp="2008-04-17T18:06:49Z" ns="0" title="Weapons" />
        <page value="20080417183028" timestamp="2008-04-17T18:30:28Z" ns="0" title="Modules" />
        <page value="20081012021518" timestamp="2008-10-12T02:15:18Z" ns="0" title="Contributors/Credits" />
        <page value="20100212183812" timestamp="2010-02-12T18:38:12Z" ns="0" title="Robot gallery" />
        <page value="20100410234007" timestamp="2010-04-10T23:40:07Z" ns="0" title="Ideas for triggers" />
        <page value="20100818070432" timestamp="2010-08-18T07:04:32Z" ns="0" title="Hosting multiple servers on Linux" />
        <page value="20101029003126" timestamp="2010-10-29T00:31:26Z" ns="0" title="Levelgen gallery" />
        <page value="20101029003222" timestamp="2010-10-29T00:32:22Z" ns="0" title="Levelgen example: Funcorners" />
        <page value="20101029003313" timestamp="2010-10-29T00:33:13Z" ns="0" title="Levelgen example: Mazeracer" />
        <page value="20101029003629" timestamp="2010-10-29T00:36:29Z" ns="0" title="Levelgen example: SquarePegs" />
      </results>
    </querypage>
  </query>
</api>