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="20141231122518" timestamp="2014-12-31T12:25:18Z" ns="0" title="وب2" />
        <page value="20150103042809" timestamp="2015-01-03T04:28:09Z" ns="0" title="دانشنامه آزاد علم اطلاعات و دانش شناسی" />
        <page value="20150103052111" timestamp="2015-01-03T05:21:11Z" ns="0" title="جامعه اطلاعاتی" />
        <page value="20150103053104" timestamp="2015-01-03T05:31:04Z" ns="0" title="رفتار اطلاعاتی" />
        <page value="20150103063136" timestamp="2015-01-03T06:31:36Z" ns="0" title="کتابخانه دیچیتال" />
        <page value="20150103071447" timestamp="2015-01-03T07:14:47Z" ns="0" title="کوانتوم اطلاعات" />
        <page value="20150103103827" timestamp="2015-01-03T10:38:27Z" ns="0" title="امنیت اطلاعات" />
        <page value="20150103115646" timestamp="2015-01-03T11:56:46Z" ns="0" title="سواد اطلاعاتی" />
        <page value="20150104052835" timestamp="2015-01-04T05:28:35Z" ns="0" title="مرگ دیچیتال" />
        <page value="20150104054416" timestamp="2015-01-04T05:44:16Z" ns="0" title="انقلاب اطلاعات" />
      </results>
    </querypage>
  </query>
</api>