--- a/model/prov-constraints.html	Fri Jul 20 15:10:21 2012 +0200
+++ b/model/prov-constraints.html	Fri Jul 20 15:13:21 2012 +0200
@@ -1789,9 +1789,9 @@
 <section id="type-rules">
 <h2>Type inference rules</h2>
 
-The following table summarizes rules which  establish the existence of entities, activities, and agents from their use within expressions. </p>
-
-    <table border=1 align="center">
+<p>The following table summarizes rules which  establish the existence of entities, activities, and agents from their use within expressions. </p>
+
+    <table border=1 style="text-align:center;">
       <tr>
 	<th>Relation</th>
 	<th>Inference rule</th>