--- a/master/command.h	Thu Apr 20 14:34:58 2006 +0000
+++ b/master/command.h	Fri Apr 21 12:35:17 2006 +0000
@@ -6,6 +6,23 @@
  *
  *  $Id$
  *
+ *  Copyright (C) 2006  Florian Pose, Ingenieurgemeinschaft IgH
+ *
+ *  This file is part of the IgH EtherCAT Master.
+ *
+ *  The IgH EtherCAT Master 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; version 2 of the License.
+ *
+ *  The IgH EtherCAT Master 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 the IgH EtherCAT Master; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
  *****************************************************************************/
 
 #ifndef _EC_COMMAND_H_
@@ -18,6 +35,16 @@
 /*****************************************************************************/
 
 /**
+   \defgroup Command EtherCAT command
+   Data types and functions for EtherCAT commands.
+   An EtherCAT command is sent and received using the ec_command_t data type.
+   It is passed to the master, which handles commands in a queue.
+   \{
+*/
+
+/*****************************************************************************/
+
+/**
    EtherCAT command type.
 */
 
@@ -89,6 +116,8 @@
 }
 ec_command_t;
 
+/** \} */
+
 /*****************************************************************************/
 
 void ec_command_init(ec_command_t *);