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="20110708094343" timestamp="2011-07-08T09:43:43Z" ns="0" title="위키피디아:틀:위키백과" />
        <page value="20110708222843" timestamp="2011-07-08T22:28:43Z" ns="0" title="팬덤" />
        <page value="20110709044223" timestamp="2011-07-09T04:42:23Z" ns="0" title="해외수인계" />
        <page value="20110709044852" timestamp="2011-07-09T04:48:52Z" ns="0" title="한국수인계" />
        <page value="20110709054403" timestamp="2011-07-09T05:44:03Z" ns="0" title="Kemosuit" />
        <page value="20110709061647" timestamp="2011-07-09T06:16:47Z" ns="0" title="축생" />
        <page value="20110727160248" timestamp="2011-07-27T16:02:48Z" ns="0" title="각국 단어 표기" />
        <page value="20111207071736" timestamp="2011-12-07T07:17:36Z" ns="0" title="역관절" />
        <page value="20120427150330" timestamp="2012-04-27T15:03:30Z" ns="0" title="Anthro" />
        <page value="20120529134842" timestamp="2012-05-29T13:48:42Z" ns="0" title="동물 인형옷" />
      </results>
    </querypage>
  </query>
</api>