-// File: SketchPlugin_Constraint.h
-// Created: 08 May 2014
-// Author: Artem ZHIDKOV
-
-#ifndef SketchPlugin_Constraint_HeaderFile
-#define SketchPlugin_Constraint_HeaderFile
-
-#include "SketchPlugin.h"
-#include "SketchPlugin_Feature.h"
-#include <ModelAPI_AttributeReference.h>
-#include <ModelAPI_AttributeRefAttr.h>
-#include <list>
-
-/* Description:
- * Each constraint uses a set of parameters. In the SolveSpace library
- * these parameters are named "valA", "ptA", "ptB", "entityA", "entityB".
- * The "ptA" and "ptB" parameters represents a point in the constraint.
- * The "entityA" and "entityB" represents any other object (and a point too).
- * And the "valA" represents a real value.
- *
- * The attributes below are named corresponding to the SolveSpace,
- * some of them may be unused. The list of used attributes is defined
- * inside the certain constraint.
- */
-/// The value parameter for the constraint
-const std::string CONSTRAINT_ATTR_VALUE("ConstraintValueA");
-/// First point for the constraint
-const std::string CONSTRAINT_ATTR_POINT_A("ConstraintPointA");
-/// Second point for the constraint
-const std::string CONSTRAINT_ATTR_POINT_B("ConstraintPointB");
-/// First entity for the constraint
-const std::string CONSTRAINT_ATTR_ENTITY_A("ConstraintEntityA");
-/// Second entity for the constraint
-const std::string CONSTRAINT_ATTR_ENTITY_B("ConstraintEntityB");
+// Copyright (C) 2014-2021 CEA/DEN, EDF R&D
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library 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
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+//
+// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
+//
+
+#ifndef SketchPlugin_Constraint_H_
+#define SketchPlugin_Constraint_H_
+
+#include <SketchPlugin_Feature.h>