--- a/rdf-concepts/index.html	Mon Oct 21 20:01:29 2013 +0200
+++ b/rdf-concepts/index.html	Mon Oct 21 14:38:39 2013 -0400
@@ -197,7 +197,8 @@
     These things are called
     <dfn title="resource">resources</dfn>. Anything can be a resource,
     including physical things, documents, abstract concepts, numbers
-    and strings; the term is synonymous with “entity”.
+    and strings; the term is synonymous with "entity" as it is used in
+		the RDF Semantics specification [[RDF-MT]].
     The resource denoted by an IRI is called its <a>referent</a>, and the
     resource denoted by a literal is called its
     <a title="literal value">literal value</a>. Literals have
@@ -251,7 +252,7 @@
 
     <li>By social convention, the
     <a href="http://www.w3.org/TR/webarch/#uri-ownership">IRI owner</a>
-    [[WEBARCH]] gets to say what what the intended (or usual)
+    [[WEBARCH]] gets to say what the intended (or usual)
     referent of an <a>IRI</a> is.  Applications and users need not
     abide by this intended denotation, but there may be a loss of
     interoperability with other applications and users if they do
@@ -523,7 +524,7 @@
     <a title="blank node">blank nodes</a> are collectively known as
     <dfn title="RDF term">RDF terms</dfn>.</p>
 
-    <p class="note"><a title="IRI">IRIs</a>, <a title="literal">literals</a>
+    <p><a title="IRI">IRIs</a>, <a title="literal">literals</a>
     and <a title="blank node">blank nodes</a> are distinct and distinguishable.
     For example, <code>http://example.org/</code> as a string literal
     is not equal to <code>http://example.org/</code> as an IRI,
@@ -553,7 +554,8 @@
     <div class="note" id="note-iris">
     <p><strong>URIs and IRIs:</strong>
     IRIs are a generalization of
-    <dfn title="URI"><abbr title="Uniform Resource Identifier">URI</abbr>s</dfn> [[RFC3986]] that permits a much wider range of Unicode characters.
+    <dfn title="URI"><abbr title="Uniform Resource Identifier">URI</abbr>s</dfn>
+		[[RFC3986]] that permits a wider range of Unicode characters.
     Every absolute URI and URL is an IRI, but not every IRI is an URI.
     When IRIs are used in operations that are only
     defined for URIs, they must first be converted according to
@@ -617,8 +619,9 @@
     <ul>
     <li>a <dfn>lexical form</dfn>, being a Unicode [[!UNICODE]] string,
     which SHOULD be in Normal Form C [[!NFC]],</li>
-    <li>a <dfn>datatype IRI</dfn>, being an <a>IRI</a> that determines
-    how the lexical form maps to a <a>literal value</a>.</li>
+    <li>a <dfn>datatype IRI</dfn>, being an <a>IRI</a> identifying a
+		datatype that determines how the lexical form maps to a
+		<a>literal value</a>.</li>
     </ul>
 
     <p>A literal is a <dfn>language-tagged string</dfn> if and only if its
@@ -838,9 +841,9 @@
     <h3>RDF Dataset Comparison</h3>
 
     <p id="section-dataset-equality">Two <a title="RDF Dataset">RDF datasets</a>
-      (the RDF dataset <var>D1</var> with default graph <var>DG1</var> and named
+      (the RDF dataset <var>D1</var> with default graph <var>DG1</var> and any named
       graph <var>NG1</var> and the RDF dataset <var>D2</var> with default graph
-      <var>DG2</var> and named graph <var>NG2</var>)
+      <var>DG2</var> and any named graph <var>NG2</var>)
       are <dfn title="dataset isomorphism">dataset-isomorphic</dfn> if and only if
       there is a bijection <var>M</var> between the nodes, triples and graphs in
       <var>D1</var> and those in <var>D2</var> such that:</p>
@@ -850,8 +853,8 @@
       <li><var>M</var> is the identity map on literals and URIs;</li>
       <li>For every triple &lt;s p o&gt;, <var>M</var>(&lt;s, p, o&gt;)=
         &lt;<var>M(s)</var>, <var>M(p)</var>, <var>M(o)</var>&gt;;</li>
-      <li>For every graph <var>G</var>={t1, ...1n},
-        <var>M(G)</var>={<var>M(t1)</var>, ..., <var>M(Tn)</var>};</li>
+      <li>For every graph <var>G</var>={t1, ..., tn},
+        <var>M(G)</var>={<var>M(t1)</var>, ..., <var>M(tn)</var>};</li>
       <li><var>DG2</var> = <var>M(DG1)</var>; and</li>
       <li>&lt;n, G&gt; is in <var>NG1</var> if and only if
         &lt;<var>M(n)</var>, <var>M(G)</var>&gt; is in <var>NG2</var>.
@@ -1212,8 +1215,11 @@
         <a href="#xsd-datatypes">section 5.1</a>.</li>
     </ol>
 
-    <p>Semantic extensions of RDF MAY recognize other datatype IRIs
-    and require them to refer to a fixed datatype.</p>
+    <p class="note">Semantic extensions of RDF might choose to
+		recognize other datatype IRIs
+    and require them to refer to a fixed datatype.  See the RDF
+		Semantics specification [[RDF-MT]] for more information on
+		semantic extensions.</p>
 
     <p>RDF processors are not required to recognize datatype IRIs.
     Any literal typed with an unrecognized IRI is treated just like
@@ -1431,7 +1437,7 @@
   <em>RDF 1.1 Concepts and Abstract Syntax</em>.</p>
 
   <ul>
-		<li>2013010-21: Added Markus Lanthaler as editor.  Minor editorial updates (e.g. repair of broken links).
+		<li>2013010-21: Added Markus Lanthaler as editor.  Minor editorial updates (e.g. repair of broken links).  Updates to sections 1.2, 1.3, 3.1, 3.2, 3.3, 4.1 and 5.4 to address <a href="http://lists.w3.org/Archives/Public/public-rdf-comments/2013Oct/0057.html">comments from Michael Schneider</a> (<a href="http://www.w3.org/2011/rdf-wg/track/issues/161">ISSUE-161</a>)</li> 
 		<li>2013-10-16: Fixed ReSpec issue regarding previous editor attributions
 		and added previous editors to acknowledgements to address <a
 		href="http://www.w3.org/2011/rdf-wg/track/issues/150">ISSUE-150</a>.</li>