--- a/rdf-concepts/index.html	Sun Nov 20 20:04:22 2011 +0000
+++ b/rdf-concepts/index.html	Mon Nov 21 20:28:23 2011 +0000
@@ -231,13 +231,13 @@
 
     <p>The <a>resource</a> <a title="denote">denoted</a> by an <a>IRI</a>
     is also called its <dfn>referent</dfn>.
-    What exactly is denoted by any given IRI is out of scope of this
-    specification and is treated in documents like
+    What exactly is denoted by any given IRI is not defined by this
+    specification. The question is treated in other documents like
     <em><a href="http://www.w3.org/TR/webarch/">Architecture of the
     World Wide Web, Volume One</a></em> [[WEBARCH]] and
     <em><a href="http://www.w3.org/TR/cooluris/">Cool URIs for the
     Semantic Web</a></em> [[COOLURIS]].
-    A very brief and partial account follows:</p>
+    A very brief, informal and partial account follows:</p>
 
     <ul>
     <li>By social convention, the
@@ -1005,7 +1005,8 @@
     then the literal value is a pair consisting of its <a>lexical form</a>
     and its <a>language tag</a>, in that order.</li>
     <li><strong>If the literal's <a>datatype IRI</a> is not in the
-    <a>datatype map</a>,</strong> then the literal value is undefined.</li>
+    <a>datatype map</a>,</strong> then the literal value is
+    not defined by this specification.</li>
     <li>Let <em>d</em> be the <a>datatype</a> associated with the
     datatype IRI in the datatype map.</li> 
     <li><strong>If the literal's <a>lexical form</a> is in the