Aziz:</span>
        Add comment about <a href="http://en.wikipedia.org/wiki/Common_Gateway_Interface"><acronym title="Common Gateway Interface">CGI</acronym></a>
        binding for extensions on the <a href="#PostProcedureCall">Procedure Call</a> object?</div>
    <h2 id="OverallLimitations">13. 
        Limitations</h2>
    <p>
        It is worth noting that JSON-RPC is limited by the inability to represent cyclic
        object graphs in JSON text. Therefore implementations SHOULD take care that parent