--- a/rdf-primer/index.html	Mon Feb 03 23:43:48 2014 +0100
+++ b/rdf-primer/index.html	Mon Feb 03 23:56:11 2014 +0100
@@ -445,7 +445,7 @@
       graphs. A first graph could be provided by a social networking
       site and identified by <code>http://example.org/bob</code>:</p> 
 
-      <pre>
+      <pre class="example">
         &lt;Bob&gt; &lt;is a&gt; &lt;person&gt;.
         &lt;Bob&gt; &lt;is a friend of&gt; &lt;Alice&gt;.
         &lt;Bob&gt; &lt;is born on&gt; &lt;the 4th of July 1990&gt;.
@@ -460,7 +460,7 @@
       and identified by
       <code>https://www.wikidata.org/wiki/Special:EntityData/Q12418</code>:</p> 
 
-      <pre>
+      <pre class="example">
         &lt;Leonardo da Vinci&gt; &lt;is the creator of&gt; &lt;the Mona Lisa&gt;.
         &lt;The video 'La Joconde à Washington'&gt; &lt;is about&gt; &lt;the Mona Lisa&gt;
       </pre>
@@ -470,7 +470,7 @@
       as subject. The triples associate publisher and license information with
       this graph IRI: </p>
 
-      <pre>
+      <pre class="example">
         &lt;http://example.org/bob&gt; &lt;is published by&gt; &lt;http://example.org&gt;.
         &lt;http://example.org/bob&gt; &lt;has license&gt; &lt;http://creativecommons.org/licenses/by/3.0/&gt;.
       </pre>
@@ -488,7 +488,7 @@
       in the intended way. Possible semantics of datasets are described in a separate note
       [[RDF11-DATASETS]]. </p> 
 
-<p class="issue">Consider adding a diagram of informal multiple graphs</p>
+<p class="issue">Consider adding a diagram with the informal multiple graphs</p>
 
       <p><a href="#subsection-trig">Sec. 5.2</a> provides an example
     of concrete syntax for this example.</p>
@@ -684,7 +684,7 @@
       end of the triple. This example represents concrete syntax for
       the second triple in <a href="#example-1">Example 1</a>.</p> 
 
-<p class="issue">Should we explitly introduce N-Triples here?</p>
+<p class="issue">We should explicitly introduce N-Triples here</p>
 
       <p>In addition to this basic stntax, Turtle
       introduces a number of syntax shortcuts, such as