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>
    <allpages apcontinue="CallforPresentations" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="385" ns="0" title="Brookline Library" />
      <p pageid="98" ns="0" title="ByLaws" />
      <p pageid="715" ns="0" title="C" />
      <p pageid="595" ns="0" title="CD&#039;s/DVDS with Linux Distros ready for install" />
      <p pageid="542" ns="0" title="CMU Gates" />
      <p pageid="99" ns="0" title="CMU Newell Simon Hall 1109" />
      <p pageid="307" ns="0" title="CMU Newell Simon Hall 1507" />
      <p pageid="293" ns="0" title="CMU Newell Simon Hall 3002" />
      <p pageid="739" ns="0" title="CRW Discussion Archives" />
      <p pageid="745" ns="0" title="CRW Reform Packages" />
    </allpages>
  </query>
</api>