--- a/rdf-turtle/index.html	Wed Jul 13 10:08:38 2011 -0700
+++ b/rdf-turtle/index.html	Wed Jul 13 10:14:37 2011 -0700
@@ -183,6 +183,10 @@
 				of repeated IRIs. This is useful for many RDF vocabularies that are
 				all defined in nearby namespace IRIs, possibly using XML's namespace
 				mechanism that works in a similar fashion.</p>
+				
+				<p class="note">While <code>@prefix</code> works somewhat like XML 
+				namespaces the restrictions from XML QNames do NOT apply. <code>leg:3032571</code>
+				is a perfectly fine prefixed name.</p>
 
 				<p>Once a prefix such as <code>@prefix foo:
 				&lt;http://example.org/ns#&gt;</code> is defined, any mention of a