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HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <allpages>
      <p pageid="304" ns="0" title="BAe 146 / Avro RJ" />
      <p pageid="450" ns="0" title="BREL APT" />
      <p pageid="677" ns="0" title="BREL Class 313" />
      <p pageid="1121" ns="0" title="BREL Class 321" />
      <p pageid="391" ns="0" title="BREL Class 58" />
      <p pageid="462" ns="0" title="BREL Class 90" />
      <p pageid="876" ns="0" title="BREL EMU" />
      <p pageid="403" ns="0" title="BREL Renewal EMU" />
      <p pageid="850" ns="0" title="BREL Wessex EMU" />
      <p pageid="471" ns="0" title="BR 1959 EMU" />
    </allpages>
  </query>
  <query-continue>
    <allpages apfrom="BR AM10" />
  </query-continue>
</api>