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="20101213002216" timestamp="2010-12-13T00:22:16Z" ns="0" title="احمد شاملو" />
        <page value="20101213011334" timestamp="2010-12-13T01:13:34Z" ns="0" title="حلقه‌ی همکاران" />
        <page value="20101213025749" timestamp="2010-12-13T02:57:49Z" ns="0" title="فولکلور" />
        <page value="20101215051417" timestamp="2010-12-15T05:14:17Z" ns="0" title="کتاب کوچه" />
        <page value="20101216171201" timestamp="2010-12-16T17:12:01Z" ns="0" title="اَ" />
        <page value="20101216172725" timestamp="2010-12-16T17:27:25Z" ns="0" title="اِ‌" />
        <page value="20101216173147" timestamp="2010-12-16T17:31:47Z" ns="0" title="اِاِ" />
        <page value="20101216185411" timestamp="2010-12-16T18:54:11Z" ns="0" title="ابابیل" />
        <page value="20101231214909" timestamp="2010-12-31T21:49:09Z" ns="0" title="آ (مانند آغ) (ترکیبات دیگر)" />
        <page value="20110101203026" timestamp="2011-01-01T20:30:26Z" ns="0" title="برای بستنِ (جلوِ) دهنِ آمیرزا..." />
      </results>
    </querypage>
  </query>
</api>