--- a/rdf-turtle/index.html	Wed May 02 06:53:10 2012 -0700
+++ b/rdf-turtle/index.html	Wed May 02 07:19:20 2012 -0700
@@ -466,7 +466,7 @@
 				    Both of these may appear in the <a href="#grammar-production-subject">subject</a> or <a href="#grammar-production-object">object</a> position of a triple (see the Turtle Grammar).
 				    That subject or object is a fresh RDF blank node.
 				    This blank node also serves as the subject of the triples produced by matching the <a href="#grammar-production-predicateObjectList">predicateObjectList</a> production embedded in a blankNodePropertyList.
-				    The generation of these triples is described below in <a href="#groups">Predicate Object Lists in Turtle</a>.
+				    The generation of these triples is described in <a href="#predicate-lists">Predicate  Lists</a>.
 				    Blank nodes are also allocated for <a href="#collections">Collections in Turtle</a> (below).
 				  </p>
 				  <pre class="example"><script type="text/turtle">@prefix foaf: <http://xmlns.com/foaf/0.1/> .

--- a/rdf-turtle/n-prime.bnf	Wed May 02 06:53:10 2012 -0700
+++ b/rdf-turtle/n-prime.bnf	Wed May 02 07:19:20 2012 -0700
@@ -30,6 +30,9 @@
                         | [#F900-#FDCF] 
                         | [#FDF0-#FFFD] 
                         | [#10000-#EFFFF] 
+[158s] PN_CHARS_U       ::=  PN_CHARS_BASE 
+                        | '_' 
+                        | ':'
 [160s] PN_CHARS         ::= PN_CHARS_U 
                         | "-" 
                         | [0-9]