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="20130823102212" timestamp="2013-08-23T10:22:12Z" ns="0" title="تاریخ خرد" />
        <page value="20130910175531" timestamp="2013-09-10T17:55:31Z" ns="0" title="هستى ( چيز ـ رخداد )" />
        <page value="20130910175651" timestamp="2013-09-10T17:56:51Z" ns="0" title="هستى ( همسانی ـ ناهمسانی)" />
        <page value="20130910175749" timestamp="2013-09-10T17:57:49Z" ns="0" title="هستى ( تقارن ـ شکست تقارن )" />
        <page value="20130910175904" timestamp="2013-09-10T17:59:04Z" ns="0" title="هستى ( کرانمندی ـ بی‌کرانگی )" />
        <page value="20130910185715" timestamp="2013-09-10T18:57:15Z" ns="0" title="شناخت ( بودن -شدن )" />
        <page value="20130910190700" timestamp="2013-09-10T19:07:00Z" ns="0" title="هستى ( مِهْ‌رَوَند ـ پديدار )" />
        <page value="20130910192637" timestamp="2013-09-10T19:26:37Z" ns="0" title="شناخت ( کل ـ جزء )" />
        <page value="20130910194557" timestamp="2013-09-10T19:45:57Z" ns="0" title="شناخت ( عليت ـ تصادف )" />
        <page value="20131128201051" timestamp="2013-11-28T20:10:51Z" ns="0" title="هم‌افزایی" />
      </results>
    </querypage>
  </query>
</api>