eturns <code class="other-name">t</code> if JSON input is well-formed, and signals error otherwise (see also under <a href="#ERROR-HANDLING"><cite>Error handling</cite></a>).</p>


<p>Macros which set or bind handlers (and other customization parameters) take their arguments in the form of property lists where each customizaion parameter is indicated by its distinctive keyword.  E. g., <code class="arg-key">:integer</code> and <code class="arg-key">:boolean</code> are the respective indicator keywords for t