--- a/model/ProvenanceModel.html	Tue Jan 17 12:59:25 2012 +0000
+++ b/model/ProvenanceModel.html	Tue Jan 17 14:36:33 2012 +0000
@@ -3448,6 +3448,12 @@
 <div class='interpretation' id='start-precedes-end'> The following ordering constraint holds for any activity record: the
 <a title="activity start event">start event</a> <a>precedes</a> the <a title="activity end event">end event</a>.</div> 
 
+<p> Assertion of a usage record and a generation record for a given entity implies ordering of <a title="event">events</a> in the world, since the <a title="entity generation event">generation event</a> had to precede the <a title="entity usage event">usage event</a>. This is
+illustrated by Subfigure <a href="#constraint-summary">constraint-summary</a> (b) and  expressed by constraint <a href="#generation-precedes-usage">generation-precedes-usage</a>.</p>
+
+<div class='interpretation' id='generation-precedes-usage'>For any entity, the following ordering constraint holds: the <a title="entity generation event">generation</a> of an entity always <a>precedes</a> any of its <a title="entity usage event">usages</a>.
+</div>
+
 <p>The assertion of a usage record implies ordering of <a title="event">events</a> in the world, since the corresponding event had to occur during the associated activity. This is
 illustrated by Subfigure <a href="#constraint-summary">constraint-summary</a> (c) and  expressed by constraint <a href="#usage-within-activity">usage-within-activity</a>.</p>
 
@@ -3456,8 +3462,10 @@
  the <a title="entity usage event">usage</a> of the entity represented by entity record identified by <span class="name">e</span> <a>precedes</a> the <a title="activity end event">end</a> of activity represented by record identified by <span class="name">a</span> and <a>follows</a> its <a title="activity start event">start</a>. 
 </div>
 
+
+
 <p>The assertion of a generation record implies ordering of <a title="event">events</a> in the world, since the corresponding event had to occur during the associated activity. This is
-illustrated by Subfigure <a href="#constraint-summary">constraint-summary</a> (e) and  expressed by constraint <a href="#generation-within-activity">generation-within-activity</a>.</p> 
+illustrated by Subfigure <a href="#constraint-summary">constraint-summary</a> (d) and  expressed by constraint <a href="#generation-within-activity">generation-within-activity</a>.</p> 
 
 <div class='interpretation' id='generation-within-activity'><span class='conditional'>If</span> an assertion <span class="name">wasGeneratedBy(x,a,attrs)</span> or <span class="name">wasGeneratedBy(x,a,attrs,t)</span> holds, <span class='conditional'>then</span> the following ordering constraint also holds: the <a title="entity generation event">generation</a> of the entity denoted by <span class="name">x</span> <a>precedes</a> the <a title="activity end event">end</a>
 of <span class="name">a</span> and <a>follows</a> the <a title="activity start event">start</a> of <span class="name">a</span>. 
@@ -3465,18 +3473,12 @@
 
 
 
-<p>Furthemore, assertion of a usage record and a generation record for a given entity implies ordering of <a title="event">events</a> in the world, since the <a title="entity generation event">generation event</a> had to precede the <a title="entity usage event">usage event</a>. This is
-illustrated by Subfigure <a href="#constraint-summary">constraint-summary</a> (b) and  expressed by constraint <a href="#generation-precedes-usage">generation-precedes-usage</a>.</p>
-
-<div class='interpretation' id='generation-precedes-usage'>For any entity, the following ordering constraint holds: the <a title="entity generation event">generation</a> of an entity always <a>precedes</a> any of its <a title="entity usage event">usages</a>.
-</div>
-
 
 <p>If a derivation record holds for <span class="name">e2</span> and <span class="name">e1</span>, then 
 this means that the entity <span class="name">e1</span> had some form of influence on the entity <span class="name">e2</span>; for this to be possible, some event ordering must be satisfied.
 First, we consider one-activity derivations. In that case, the <a title="entity usage event">usage</a> of <span class="name">e1</span> has to precede the <a title="entity generation event">generation</a> of <span class="name">e2</span>.
 This is
-illustrated by Subfigure <a href="#constraint-summary">constraint-summary</a> (d) and  expressed by constraint <a href="#derivation-usage-generation-ordering">derivation-usage-generation-ordering</a>.</p>
+illustrated by Subfigure <a href="#constraint-summary">constraint-summary</a> (e) and  expressed by constraint <a href="#derivation-usage-generation-ordering">derivation-usage-generation-ordering</a>.</p>
 
 
 <div class='interpretation' id='derivation-usage-generation-ordering'>Given an activity record identified by <span class="name">a</span>, entity records identified by <span class="name">e1</span> and <span class="name">e2</span>, generation record identified by <span class="name">g2</span>, and usage record identified by <span class="name">u1</span>, <span class='conditional'>if</span> the record <span class="name">wasDerivedFrom(e2,e1,a,g2,u1,attrs)</span>

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