--- a/model/prov-constraints.html	Mon Sep 03 16:39:51 2012 +0100
+++ b/model/prov-constraints.html	Mon Sep 03 16:41:28 2012 +0100
@@ -1677,7 +1677,7 @@
 
 <tr class="component6-color">
 	<td><a>Collection</a></td>
-	<td> </td>
+	<td> No specific constraints </td>
 	<td  rowspan="2"  style="text-align: center; "><a href="http://www.w3.org/TR/prov-dm/#component6" title="Component 6: Collections">6</a></td>
 </tr>
 <tr class="component6-color">