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="20101110165145" timestamp="2010-11-10T16:51:45Z" ns="0" title="Umbral Platemail" />
        <page value="20110110202235" timestamp="2011-01-10T20:22:35Z" ns="0" title="The Skull of Torture" />
        <page value="20110216020237" timestamp="2011-02-16T02:02:37Z" ns="0" title="Honey Jum" />
        <page value="20110513154234" timestamp="2011-05-13T15:42:34Z" ns="0" title="Red Scabbard" />
        <page value="20110515204714" timestamp="2011-05-15T20:47:14Z" ns="0" title="Arrow of Frost" />
        <page value="20110527034947" timestamp="2011-05-27T03:49:47Z" ns="0" title="Summoned: Hammer of Wrath" />
        <page value="20110705135740" timestamp="2011-07-05T13:57:40Z" ns="0" title="Elvish" />
        <page value="20110705144834" timestamp="2011-07-05T14:48:34Z" ns="0" title="Gnomish" />
        <page value="20110707172920" timestamp="2011-07-07T17:29:20Z" ns="0" title="Dwarvish Dictionary" />
        <page value="20110720135400" timestamp="2011-07-20T13:54:00Z" ns="0" title="Gate Keepers" />
      </results>
    </querypage>
  </query>
</api>