Augment documentation.

git-svn-id: https://svn.dealii.org/trunk@25298 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/include/deal.II/grid/grid_generator.h b/deal.II/include/deal.II/grid/grid_generator.h
index 6406061e86bb817b4695305ee7ba15e67a6b3ea2..5b19207dc344e0c4cc031be3bd90d00e3dfaaf09 100644 (file)
--- a/deal.II/include/deal.II/grid/grid_generator.h
+++ b/deal.II/include/deal.II/grid/grid_generator.h
@@ -1,7 +1,7 @@
 //---------------------------------------------------------------------------
 //    $Id$
 //
-//    Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 by the deal.II authors
+//    Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 by the deal.II authors
 //
 //    This file is subject to QPL and may not be  distributed
 //    without copyright and license information. Please refer
@@ -561,7 +561,12 @@ class GridGenerator
                                      * spheres around <tt>center</tt>,
                                      * with given
                                      * <tt>inner_radius</tt> and
-                                     * <tt>outer_radius</tt>.
+                                     * <tt>outer_radius</tt>. The number
+                                     * <tt>n_cells</tt> indicates the
+                                     * number of cells of the resulting
+                                     * triangulation, i.e., how many cells
+                                     * form the ring (in 2d) or the shell
+                                     * (in 3d).
                                      *
                                      * If the flag @p colorize is @p true,
                                      * then the outer boundary will have the
@@ -998,7 +1003,7 @@ class GridGenerator
                                 const Point<dim>& center,
                                 const double inner_radius,
                                 const double outer_radius);
-    
+
                                     /**
                                      * Solve the Laplace equation for
                                      * @p laplace_transformation