Index: sources/abstract/singleton.h
===================================================================
diff -u -rfeb3423b373dc2a2c4267ef9fcb4d924d738423d -r56e378f7504701b9e9a9dccaf205aef2fd52c58e
--- sources/abstract/singleton.h	(.../singleton.h)	(revision feb3423b373dc2a2c4267ef9fcb4d924d738423d)
+++ sources/abstract/singleton.h	(.../singleton.h)	(revision 56e378f7504701b9e9a9dccaf205aef2fd52c58e)
@@ -1,14 +1,15 @@
 /*!
  *
  * Copyright (c) 2019-2020 Diality Inc. - All Rights Reserved.
- * copyright
- *          THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM,
- *          IN PART OR IN WHOLE,
- *          WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
+ * \copyright
+ * THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
+ * WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
  *
- * file    singleton.h
- * date    12/31/2019
- * author  Behrouz NematiPour
+ * \file singleton.h
+ * \author (last) Behrouz NematiPour
+ * \date (last) 02-Jan-2020
+ * \author (original) Behrouz NematiPour
+ * \date (original) 02-Jan-2020
  *
  */
 #pragma once