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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="23" ns="0" title="Big Ship" />
      <p pageid="7" ns="0" title="Building" />
      <p pageid="13" ns="0" title="Community Chest" />
      <p pageid="14" ns="0" title="Community Projects" />
      <p pageid="2" ns="0" title="Connecting to the Server" />
      <p pageid="15" ns="0" title="East-West Canal" />
      <p pageid="46" ns="0" title="Float" />
      <p pageid="22" ns="0" title="Floating City" />
      <p pageid="6" ns="0" title="Geography" />
      <p pageid="39" ns="0" title="Lag/Uptime" />
    </allpages>
  </query>
  <query-continue>
    <allpages apfrom="Lake Nye Canal" />
  </query-continue>
</api>