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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>
    <querypage name="Ancientpages">
      <results>
        <page value="20070630192741" timestamp="2007-06-30T19:27:41Z" ns="0" title="Current events" />
        <page value="20070702171602" timestamp="2007-07-02T17:16:02Z" ns="0" title="Ad-Aware" />
        <page value="20070709205226" timestamp="2007-07-09T20:52:26Z" ns="0" title="Curriculum Vitae" />
        <page value="20070721145710" timestamp="2007-07-21T14:57:10Z" ns="0" title="Hoofdpagina" />
        <page value="20070815164440" timestamp="2007-08-15T16:44:40Z" ns="0" title="Links 20070630" />
        <page value="20070815164709" timestamp="2007-08-15T16:47:09Z" ns="0" title="Links 20070815" />
        <page value="20070815164723" timestamp="2007-08-15T16:47:23Z" ns="0" title="Freelance Sites" />
        <page value="20070817145240" timestamp="2007-08-17T14:52:40Z" ns="0" title="Freelanceswitch classificatie" />
        <page value="20070817182206" timestamp="2007-08-17T18:22:06Z" ns="0" title="Freelance Links" />
      </results>
    </querypage>
  </query>
</api>