Index: openacs-4/packages/layout-manager/tcl/includelet-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/layout-manager/tcl/includelet-procs.tcl,v
diff -u -r1.5 -r1.6
--- openacs-4/packages/layout-manager/tcl/includelet-procs.tcl	19 Aug 2008 22:12:43 -0000	1.5
+++ openacs-4/packages/layout-manager/tcl/includelet-procs.tcl	30 Aug 2008 00:34:10 -0000	1.6
@@ -21,6 +21,7 @@
     {-uninitializer ""}
     {-required_privilege read}
     {-internally_managed_p f}
+    {-singleton_p t}
 } {
     Create a new layout manager includelet.