--- a/spec/latest/index.html	Thu Aug 18 15:57:29 2011 -0400
+++ b/spec/latest/index.html	Thu Aug 18 16:14:56 2011 -0400
@@ -4139,10 +4139,14 @@
     <dl>
       <dt><code>format</code></dt>
       <dd>Determines the serialization format for the JSON-LD document. Valid 
-        values include; <code>compact</code>, <code>expanded</code>, 
+        values include; <code>compacted</code>, <code>expanded</code>, 
         <code>framed</code>, and <code>normalized</code>. Other values are
         allowed, but must be pre-pended with a <code>x-</code> string until
-        they are clearly defined by a stable specification.</dd>
+        they are clearly defined by a stable specification. If no format
+        is specified in an HTTP request header to a responding application,
+        such as a Web server, the application MAY choose any format. If no 
+        format is specified for a receiving application, the format MUST NOT 
+        be assumed to take any particular form.</dd>
     </dl>
   </dd>
   <dt>Encoding considerations:</dt>