Index: trunk/doc/user/06_features/hierarchic/index.html
===================================================================
--- trunk/doc/user/06_features/hierarchic/index.html	(revision 10431)
+++ trunk/doc/user/06_features/hierarchic/index.html	(revision 10432)
@@ -314,7 +314,7 @@
 turns off the search mechanism and searches right in the project global namespace;
 if the object is not found, it is created in the project global namespace.
 
-<h4 autotoc="yes"> Expert: hlibrary </h4>
+<h4 autotoc="yes" id="hlibrary"> Expert: hlibrary </h4>
 <p>
 The simpler usage discussed above, is also the self-contained usage: when
 all sheets files of the hierarchy are placed in a single project directory