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>
    <alllinks galcontinue="CodeArchive_Geometry" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1498" ns="0" title="CodeArchive 3DGeometry" />
      <page pageid="1499" ns="0" title="CodeArchive AllPairMinCut" />
      <page pageid="1500" ns="0" title="CodeArchive BPTShort" />
      <page pageid="1501" ns="0" title="CodeArchive BigIntSqrt" />
      <page pageid="1502" ns="0" title="CodeArchive BinaryIndexedTree" />
      <page pageid="1504" ns="0" title="CodeArchive ChineseRemainderTheorem" />
      <page pageid="1505" ns="0" title="CodeArchive CircleBoundaryTraversal" />
      <page pageid="1506" ns="0" title="CodeArchive EulerCircuit" />
      <page pageid="1507" ns="0" title="CodeArchive ExpressionEvaluation" />
      <page pageid="1508" ns="0" title="CodeArchive ExtendedGCD" />
    </pages>
  </query>
</api>