--- a/model/prov-n.html	Thu May 10 21:36:59 2012 +0100
+++ b/model/prov-n.html	Thu May 10 21:37:16 2012 +0100
@@ -416,10 +416,10 @@
 <tr><td><span class="nonterminal">expression</span> <br/><br/><br/><br/><br/><br/><br/>
 </td><td>&nbsp;::=<br/><br/><br/><br/><br/><br/><br/></td><td>
 <!-- Component 1-->
-<span class="nonterminal">entityExpression</span> 
-| <span class="nonterminal">activityExpression</span> 
-| <span class="nonterminal">generationExpression</span> 
-| <span class="nonterminal">usageExpression</span> 
+<a href="#expression-Entity"><span class="nonterminal">entityExpression</span></a>
+| <a href="#expression-Activity"><span class="nonterminal">activityExpression</span> </a> 
+| <a href="#expression-Generation"><span class="nonterminal">generationExpression</span> </a>
+| <a href="#expression-Usage"><span class="nonterminal">usageExpression</span> </a>
 <br/>
 &nbsp;&nbsp;| <span class="nonterminal">startExpression</span> 
 | <span class="nonterminal">endExpression</span> 
@@ -550,7 +550,7 @@
 <span class="nonterminal">entityExpression</span>&nbsp;::=  
 <span class="name">entity</span>
 <span class="name">(</span>
-<span class="nonterminal">identifier</span>
+<a href="#expression-identifier"><span class="nonterminal">identifier</span></a>
 <span class="nonterminal">optional-attribute-values</span>
 <span class="name">)</span><br/><br/>
 <!-- -->
@@ -594,12 +594,12 @@
 <span class="nonterminal">activityExpression</span>&nbsp;::=  
 <span class="name">activity</span>
 <span class="name">(</span>
-<span class="nonterminal">identifier</span>
+<a href="#expression-identifier"><span class="nonterminal">identifier</span></a>
 <span class="optional"><span class="name">,</span>
-(<span class="nonterminal">time</span> | <span class="name">-</span> )
+(<a href="#expression-Time"><span class="nonterminal">time</span></a> | <span class="name">-</span> )
 <span class="name">,</span>
-(<span class="nonterminal">time</span> | <span class="name">-</span> )</span>
-<span class="nonterminal">optional-attribute-values</span>
+(<a href="#expression-Time"><span class="nonterminal">time</span></a> | <span class="name">-</span> )</span>
+<a href="#expression-Entity"><span class="nonterminal">optional-attribute-values</span></a>
 <span class="name">)</span>
 </div>
 </div>