--- /dev/null
+/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * See cxx source for full Copyright notice */
+
+// $Id$
+// $MpId: AliMpXDirection.h,v 1.6 2006/05/24 13:58:07 ivana Exp $
+
+/// \ingroup basic
+/// \enum AliMp::XDirection
+/// Enumeration for the directions in a plane.
+///
+/// \author David Guez, IPN Orsay
+
+#ifndef ALI_MP_X_DIRECTION_H
+#define ALI_MP_X_DIRECTION_H
+
+namespace AliMp {
+
+ enum XDirection
+ {
+ kLeft, ///< special row segments built from right to left
+ kRight ///< special row segments built from left to right
+ };
+
+}
+
+#endif //ALI_MP_X_DIRECTION_H