// $Id$
// Version: $Name$
//
-// Copyright (C) 2006, 2007 by the deal.II authors
+// Copyright (C) 2006, 2007, 2010 by the deal.II authors
//
// This file is subject to QPL and may not be distributed
// without copyright and license information. Please refer
* The DoFHandler class and its associates are described in the @ref
* dofs module. In addition, there are specialized versions that can
* handle multilevel and hp discretizations. These are described in
- * the @ref mg and @ref hp modules.
+ * the @ref mg and @ref hp modules. Finite element methods frequently
+ * imply constraints on degrees of freedom, such as for hanging nodes
+ * or nodes at which boundary conditions apply; dealing with such
+ * constraints is described in the @ref constraints module.
*
*
* <li> <b>%Mapping</b>: The next step in a finite element program