--- a/trig/index.html	Sun Mar 31 23:33:01 2013 +0200
+++ b/trig/index.html	Sun Mar 31 23:45:30 2013 +0200
@@ -109,9 +109,12 @@
 			</p>
 		</section>
 
-	    <section id='sotd'>
-	    	
-    	</section>
+	        <section id='sotd'>
+<p>This document is intended the meet the requirement stated in the charter
+<a href="http://www.w3.org/2011/rdf-wg/">RDF Working Group</a> to
+define a syntax for multiple graphs. The current document is based on
+the original proposal by Chris Bizer and Richard Cyganiak.</p> 
+                </section>
 
 		<section id="sec-intro">
 			<h2>Introduction</h2>