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="20150225133726" timestamp="2015-02-25T13:37:26Z" ns="0" title="Test" />
        <page value="20150226004816" timestamp="2015-02-26T00:48:16Z" ns="0" title="디버깅 시 유용한 명령 편집하기" />
        <page value="20150226005052" timestamp="2015-02-26T00:50:52Z" ns="0" title="ARM ETM Trace와 PowerTrace 편집하기" />
        <page value="20150226005216" timestamp="2015-02-26T00:52:16Z" ns="0" title="Script Programming 2" />
        <page value="20150226005613" timestamp="2015-02-26T00:56:13Z" ns="0" title="TIZEN OS" />
        <page value="20150226005647" timestamp="2015-02-26T00:56:47Z" ns="0" title="TRACE32FAQLink" />
        <page value="20150226005718" timestamp="2015-02-26T00:57:18Z" ns="0" title="PowerProbeLink" />
        <page value="20150226005745" timestamp="2015-02-26T00:57:45Z" ns="0" title="TRACE32 Update Manager" />
        <page value="20150226005816" timestamp="2015-02-26T00:58:16Z" ns="0" title="Bus error" />
        <page value="20150226005905" timestamp="2015-02-26T00:59:05Z" ns="0" title="ARMv8에서 SYStem.CPU 명령에서 syntax error가 발생합니다" />
      </results>
    </querypage>
  </query>
</api>