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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>
    <alllinks>
      <l ns="0" title="SIG API. Preface" />
      <l ns="0" title="SIG API. WSDL &amp; XSD" />
      <l ns="0" title="SIG API guide" />
      <l ns="0" title="SIG API programmers guide" />
      <l ns="0" title="SIG AirAvailRS" />
      <l ns="0" title="SIG AirBookRQ" />
      <l ns="0" title="SIG AirBookRS" />
      <l ns="0" title="SIG AirFareRuleRQ" />
      <l ns="0" title="SIG AirFareRuleRS" />
      <l ns="0" title="SIG AirFareRulesRS" />
    </alllinks>
  </query>
  <query-continue>
    <alllinks alfrom="SIG AirPriceRS" />
  </query-continue>
</api>