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="20070122230017" timestamp="2007-01-22T23:00:17Z" ns="0" title="CodeArchive 3DGeometry" />
        <page value="20070122230537" timestamp="2007-01-22T23:05:37Z" ns="0" title="CodeArchive BPTShort" />
        <page value="20070122230611" timestamp="2007-01-22T23:06:11Z" ns="0" title="CodeArchive AllPairMinCut" />
        <page value="20070122230733" timestamp="2007-01-22T23:07:33Z" ns="0" title="CodeArchive BigIntSqrt" />
        <page value="20070122231320" timestamp="2007-01-22T23:13:20Z" ns="0" title="CodeArchive BinaryIndexedTree" />
        <page value="20070122231411" timestamp="2007-01-22T23:14:11Z" ns="0" title="CodeArchive ChineseRemainderTheorem" />
        <page value="20070122231453" timestamp="2007-01-22T23:14:53Z" ns="0" title="CodeArchive CircleBoundaryTraversal" />
        <page value="20070130014640" timestamp="2007-01-30T01:46:40Z" ns="0" title="CodeArchive EulerCircuit" />
        <page value="20070130014803" timestamp="2007-01-30T01:48:03Z" ns="0" title="CodeArchive ExpressionEvaluation" />
        <page value="20070130014917" timestamp="2007-01-30T01:49:17Z" ns="0" title="CodeArchive ExtendedGCD" />
      </results>
    </querypage>
  </query>
</api>