--- a/webaudio/specification.html	Mon Nov 12 12:02:18 2012 -0800
+++ b/webaudio/specification.html	Tue Nov 13 12:57:02 2012 -0800
@@ -1022,7 +1022,8 @@
       representing a variable delay line. The initial default delay time will
       be 0 seconds.</p>
       <p>The <dfn id="dfn-maxDelayTime">maxDelayTime</dfn> parameter is
-      optional and specifies the maximum delay time allowed for the delay line.</p>
+      optional and specifies the maximum delay time allowed for the delay line.  If specified, this value must be
+      greater than zero and less than three minutes or a NOT_SUPPORTED_ERR exception will be thrown.</p>
     </dd>
 </dl>
 <dl>