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diff --git a/os/hal/dox/st.dox b/os/hal/dox/st.dox
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+/*
+    ChibiOS - Copyright (C) 2006,2007,2008,2009,2010,
+              2011,2012,2013,2014 Giovanni Di Sirio.
+
+    This file is part of ChibiOS/HAL 
+
+    ChibiOS/HAL is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    ChibiOS/RT is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @defgroup ST ST Driver
+ * @brief Generic System Tick driver.
+ * @details This module implements a system tick timer in order to support
+ *          the underlying operating system.
+ *
+ * @ingroup HAL_NORMAL_DRIVERS
+ */