List step 12b in the list of tutorials.

diff --git a/doc/doxygen/tutorial/tutorial.h.in b/doc/doxygen/tutorial/tutorial.h.in
index 926ae7d96b1edbb0054b18640f0cd358247f4153..5d2b3dd7a6480a3c455a48ee749c50be0f1ef158 100644 (file)
--- a/doc/doxygen/tutorial/tutorial.h.in
+++ b/doc/doxygen/tutorial/tutorial.h.in
@@ -202,6 +202,12 @@
  *       </td></tr>
  *
  *   <tr valign="top">
+ *       <td>step-12b</td>
+ *       <td> A variant of step-12 (for linear advection problems), but
+ *       using the MeshWorker framework for the assembly of linear systems.
+ *       </td></tr>
+ *
+ *   <tr valign="top">
  *       <td>step-13</td>
  *       <td> Software design questions and
  *       how to write a modular, extensible finite element program.