diff --git a/src/doc/user/usermanual.html b/src/doc/user/usermanual.html
index 0347adf7..8838fd51 100644
--- a/src/doc/user/usermanual.html
+++ b/src/doc/user/usermanual.html
@@ -4214,6 +4214,9 @@ alink="#0000FF">
                   <li class="listitem">
                     <p><b>%t.&nbsp;</b>Title or empty.</p>
                   </li>
+                  <li class="listitem">
+                    <p><b>%(filename).&nbsp;</b>File name.</p>
+                  </li>
                   <li class="listitem">
                     <p><b>%U.&nbsp;</b>Url</p>
                   </li>
diff --git a/src/doc/user/usermanual.xml b/src/doc/user/usermanual.xml
index 64d8fe8f..caef0746 100644
--- a/src/doc/user/usermanual.xml
+++ b/src/doc/user/usermanual.xml
@@ -3175,6 +3175,9 @@
               <listitem><formalpara><title>%t</title><para>Title or empty.
               </para></formalpara> 
               </listitem>
+              <listitem><formalpara><title>%(filename)</title><para>File name.
+              </para></formalpara> 
+              </listitem>
               <listitem><formalpara><title>%U</title><para>Url</para></formalpara>
               </listitem>
             </itemizedlist>