Index: src/libchengine/FeedbackRules.h
===================================================================
diff -u -N -r08717141ce5f6926116c298cbc9442094a45bb67 -rf01ed9a0279a52c96a7272273ef19e57f7670f4a
--- src/libchengine/FeedbackRules.h	(.../FeedbackRules.h)	(revision 08717141ce5f6926116c298cbc9442094a45bb67)
+++ src/libchengine/FeedbackRules.h	(.../FeedbackRules.h)	(revision f01ed9a0279a52c96a7272273ef19e57f7670f4a)
@@ -1,3 +1,21 @@
+// ============================================================================
+//  Copyright (C) 2001-2020 by Jozef Starosczyk
+//  ixen {at} copyhandler [dot] com
+//
+//  This program is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU Library General Public License
+//  (version 2) as published by the Free Software Foundation;
+//
+//  This program 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 Library General Public
+//  License along with this program; if not, write to the
+//  Free Software Foundation, Inc.,
+//  59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+// ============================================================================
 #pragma once
 
 #include "libchengine.h"
@@ -22,6 +40,9 @@
 
 		void Clear();
 
+		void ResetModifications();
+		bool IsModified() const;
+
 		const FeedbackAlreadyExistsRuleList& GetAlreadyExistsRules() const;
 		FeedbackAlreadyExistsRuleList& GetAlreadyExistsRules();