--- a/rdf11-testcases/index.html	Wed Feb 12 16:19:17 2014 +0100
+++ b/rdf11-testcases/index.html	Wed Feb 12 16:32:59 2014 +0100
@@ -145,6 +145,9 @@
           <li><a href="http://json-ld.org/test-suite/reports/index.html">Implementation Report</a></li>
         </ul>
       </li>
+
+      <p>RDF 1.1 Concepts [[RDF11-CONCEPTS]] does not have a test suite and is not directly implemented in software;
+        instead, it is implemented by the specs which build on it, including the other specs in this set.</p>
     </ul>
   </section>