--- a/model/prov-dm-constraints.html	Wed Mar 28 15:38:59 2012 +0100
+++ b/model/prov-dm-constraints.html	Wed Mar 28 15:43:19 2012 +0100
@@ -1538,6 +1538,15 @@
 </section>
 
 
+<section id="collection-constraints">
+<h3>PROV-DM Collection Constraints</h3>
+
+<div class='note'>
+Edited by PM --- TBC
+</div>
+
+
+
 <div class='constraint' id='collection-parallel-insertions'>
 <p>One can have multiple assertions regarding the state of a collection following a <em>set</em> of insertions, for example:</p>
 <pre class="codeexample">