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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-continue>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20100603023157" timestamp="2010-06-03T02:31:57Z" ns="0" title="Work/Bifrost" />
        <page value="20100603121903" timestamp="2010-06-03T12:19:03Z" ns="0" title="Sound/Original" />
        <page value="20100603135648" timestamp="2010-06-03T13:56:48Z" ns="0" title="Novel" />
        <page value="20100603141033" timestamp="2010-06-03T14:10:33Z" ns="0" title="CG" />
        <page value="20100817074441" timestamp="2010-08-17T07:44:41Z" ns="0" title="Twitter/twksr" />
        <page value="20110415072849" timestamp="2011-04-15T07:28:49Z" ns="0" title="コミックマーケットC78" />
        <page value="20110415072914" timestamp="2011-04-15T07:29:14Z" ns="0" title="コミックマーケットC79" />
        <page value="20110415170743" timestamp="2011-04-15T17:07:43Z" ns="0" title="想いの眠るゆりかご -Reel of Memories-" />
        <page value="20110423105114" timestamp="2011-04-23T10:51:14Z" ns="0" title="駆ける風、駆ける記憶 -Dear My Track-" />
        <page value="20110423105354" timestamp="2011-04-23T10:53:54Z" ns="0" title="The Fate of The Fairies -tm2 edition-" />
      </results>
    </querypage>
  </query>
</api>