--- a/rdf-turtle/index.html	Fri Jun 10 22:51:29 2011 -0700
+++ b/rdf-turtle/index.html	Sat Jun 11 13:08:41 2011 -0700
@@ -813,7 +813,7 @@
         <h2>Turtle compared</h2>
         <p>Turtle is related to a number of other languages.</p>
       <section id="sec-diff-ntriples" class="informative">
-        <h2>Turtle compared to N-Triples (Informative)</h2>
+        <h3>Turtle compared to N-Triples (Informative)</h3>
         <p class="note">All of the parts of Turtle that talk about being derived from N-Triples need to change if this document also specifies N-Triples.</p>
         <p>Turtle adds the following syntax to N-Triples:</p>
 
@@ -840,7 +840,7 @@
         </ol>
       </section>
       <section id="sec-diff-n3" class="informative">
-        <h3>Turtle compared to Notation 3 (Informative)</h2>
+        <h3>Turtle compared to Notation 3 (Informative)</h3>
 
         <p>Notation 3 (N3) triples are a superset of RDF triples.
         In particular, N3 formulae (graphs) may be the subject or object of N3 triples.
@@ -864,7 +864,7 @@
         </ol>
       </section>
       <section  id="sec-diff-sparql" class="informative">
-      <h3>Turtle compared to SPARQL (Informative)</h2>
+      <h3>Turtle compared to SPARQL (Informative)</h3>
 
       <p>The <a href="http://www.w3.org/TR/2008/REC-rdf-sparql-query-20080115/">SPARQL Query Language for RDF</a> (<acronym title="SPARQL Protocol And RDF Query Language">SPARQL</acronym>) [[RDF-SPARQL-QUERY]] uses a Turtle/N3 style syntax for its <a href="../../../2009/sparql/docs/query-1.1/rq25#rTriplesBlock">TriplesBlock production</a>.
       This production differs from the Turtle langage in that: