onments, scenarios
        and especially programming languages.</p>
    <h2 id="ObjectExtensions">12. 
        Object Extensions</h2>
    <p>
        Objects defined in this specification (<a href="#PostProcedureCall">Procedure Call</a>, <a href="#ProcedureReturn">Procedure Return</a>, <a href="#ErrorObject">Error</a>)
        MAY contain additional members not specifically
        mentioned. Such
        member names SHOULD be prefixed with the Dollar sign (U+0024 or ASCII 36), as in <code>$extension</cod