--- a/spec/latest/json-ld-api/index.html	Mon Oct 01 14:39:06 2012 +0200
+++ b/spec/latest/json-ld-api/index.html	Mon Oct 01 16:30:07 2012 +0200
@@ -996,7 +996,7 @@
         one element with that element during compaction. If set to <code>false</code>,
         all arrays will remain arrays even if they have just one element.
       </dd>
-      <dt>boolean flatten = false</dt>
+      <dt>boolean or IRI flatten = false</dt>
       <dd>If set to a value that is not <code>false</code>,
         the JSON-LD processor must modify the output of the
         <a href="#compaction-algorithm">Compaction Algorithm</a>