diff --git a/Doc/Templates/docbookSnippets.xml b/Doc/Templates/docbookSnippets.xml
index c385c21582d23fe95257d299261458643b923c60..a5f9edd850033572d9d6734f8577902f41c07d4a 100644
--- a/Doc/Templates/docbookSnippets.xml
+++ b/Doc/Templates/docbookSnippets.xml
@@ -52,6 +52,12 @@ http://xahlee.info/comp/unicode_drawing_shapes.html <co xml:id="dummy"/>
           <para/>
         </callout>
       </calloutlist>
+
+      <note>
+        <para>The preceding <tag class="starttag">calloutlist role =
+        "slideExclude"</tag> excludes the whole block from appearing in
+        slides.</para>
+      </note>
     </figure>
   </section>