diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -107,3 +107,7 @@
 ## 0.6.2.0 -- 2019-12-24
 
 * Sixth version revised B. Changed the imported functions in the Melodics.Ukrainian module.
+
+## 0.6.3.0 -- 2020-01-31
+
+* Sixth version revised C. Changed a README.md file to README.markdown. Some documentation improvements.
diff --git a/LICENSE b/LICENSE
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2019 OleksandrZhabenko
+Copyright (c) 2019-2020 OleksandrZhabenko
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the
diff --git a/Main.hs b/Main.hs
--- a/Main.hs
+++ b/Main.hs
@@ -1,8 +1,7 @@
 -- |
 -- Module      :  Main
--- Copyright   :  (c) OleksandrZhabenko 2019
+-- Copyright   :  (c) OleksandrZhabenko 2019-2020
 -- License     :  MIT
---
 -- Maintainer  :  olexandr543@yahoo.com
 --
 -- A program and a library that can be used as a musical instrument synthesizer or for Ukrainian speech synthesis 
diff --git a/Melodics/Ukrainian.hs b/Melodics/Ukrainian.hs
--- a/Melodics/Ukrainian.hs
+++ b/Melodics/Ukrainian.hs
@@ -1,8 +1,7 @@
 -- |
 -- Module      :  Melodics.Ukrainian
--- Copyright   :  (c) OleksandrZhabenko 2019
+-- Copyright   :  (c) OleksandrZhabenko 2019-2020
 -- License     :  MIT
---
 -- Maintainer  :  olexandr543@yahoo.com
 --
 -- Functions used in the main function to provide functionality of a musical instrument synthesizer or for Ukrainian speech synthesis 
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -1,3 +1,6 @@
+              ***** Usage *****
+              -----------------
+
 The program can be used as a special musical instrument 
 or a voicing for Ukrainian text. It is not 
 phonetically exact and proper, but it gives 
@@ -11,6 +14,5 @@
 
 The phonetic and writing system material are from the source:
 
-Solomija Buk, Ján Mačutek, Andrij Rovenchak. Some properties of 
-the Ukrainian writing system. Electronic resource. 
-<https://arxiv.org/ftp/arxiv/papers/0802/0802.4198.pdf>
+[Solomija Buk, Ján Mačutek, Andrij Rovenchak. Some properties of 
+the Ukrainian writing system. Electronic resource](https://arxiv.org/ftp/arxiv/papers/0802/0802.4198.pdf)
diff --git a/UkrainianLControl.hs b/UkrainianLControl.hs
--- a/UkrainianLControl.hs
+++ b/UkrainianLControl.hs
@@ -1,8 +1,7 @@
 -- |
 -- Module      :  UkrainianLControl
--- Copyright   :  (c) OleksandrZhabenko 2019
+-- Copyright   :  (c) OleksandrZhabenko 2019-2020
 -- License     :  MIT
---
 -- Maintainer  :  olexandr543@yahoo.com
 --
 -- A program and a library that can be used as a musical instrument synthesizer or for Ukrainian speech synthesis 
diff --git a/mmsyn6ukr.cabal b/mmsyn6ukr.cabal
--- a/mmsyn6ukr.cabal
+++ b/mmsyn6ukr.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                mmsyn6ukr
-version:             0.6.2.0
+version:             0.6.3.0
 synopsis:            A musical instrument synthesizer or a tool for Ukrainian language listening
 description:         A program can be used as a musical instrument synthesizer or for Ukrainian speech synthesis especially for poets and writers
 homepage:            https://hackage.haskell.org/package/mmsyn6ukr