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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="3831" ns="0" title="B.m.c." />
      <p pageid="14880" ns="0" title="BK" />
      <p pageid="2390" ns="0" title="BMC" />
      <p pageid="35042" ns="0" title="BMC-Bärchen" />
      <p pageid="56880" ns="0" title="BMC-Magazin 17" />
      <p pageid="57849" ns="0" title="BMC-Magazin 18" />
      <p pageid="59243" ns="0" title="BMC-Magazin 19" />
      <p pageid="59956" ns="0" title="BMC-Magazin 20" />
      <p pageid="62618" ns="0" title="BMC-Magazin 21" />
      <p pageid="63342" ns="0" title="BMC-Magazin 22" />
    </allpages>
  </query>
  <query-continue>
    <allpages apfrom="BMC-News" />
  </query-continue>
</api>