diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,3 +3,7 @@
 ## 0.1.0.0 -- 2020-01-07
 
 * First version. Released on an unsuspecting world.
+
+## 0.1.0.1 -- 2020-01-07
+
+* First version revised A. Some documentation minor improvements. 
diff --git a/MMSyn7l.hs b/MMSyn7l.hs
--- a/MMSyn7l.hs
+++ b/MMSyn7l.hs
@@ -20,7 +20,7 @@
 
 -- | Function 'changeVolume' is used to change the amplitude of the sound. 
 -- For the proper proceeding you specify a @String@, which consists of 4 
--- digits (and it may be preceeded by a symbol \"-\"). If the @String@ 
+-- digits (and it may be preceded by a symbol \"-\"). If the @String@ 
 -- begins with the \"-\", then a sound amplitude decreases, otherwise 
 -- the amplitude increases. The level of increase / decrease is 
 -- determined by the magnitude of the absolute value of integer numbers. 
@@ -55,10 +55,10 @@
               "с","сь","т","у","ф","х","ц","ць","ч","ш","ь","і","ґ"]) file
   putStrLn $ "You can now change the volume for the played sound representation for the Ukrainian sound " ++ show (map toUpper sound)
   putStrLn ""
-  putStr "Please, specify the change by passing a String of digits (with may be a preceeding symbol \'-\'). "
+  putStr "Please, specify the change by passing a String of digits (with may be a preceding symbol \'-\'). "
   putStr ""
   putStr "For the proper proceeding you specify a String, which consists of 4 "
-  putStr "digits (and it may be preceeded by a symbol \"-\"). If the String "
+  putStr "digits (and it may be preceded by a symbol \"-\"). If the String "
   putStr "begins with the \"-\", then a sound amplitude decreases, otherwise "
   putStr "the amplitude increases. The level of increase / decrease is "
   putStr "determined by the magnitude of the absolute value of integer numbers. "
diff --git a/README b/README
--- a/README
+++ b/README
@@ -1,5 +1,5 @@
 For the proper proceeding you specify a String, which consists of 4 
-digits (and it may be preceeded by a symbol "-"). If the String 
+digits (and it may be preceded by a symbol "-"). If the String 
 begins with the "-", then a sound amplitude decreases, otherwise 
 the amplitude increases. The level of increase / decrease is 
 determined by the magnitude of the absolute value of integer numbers. 
diff --git a/mmsyn7l.cabal b/mmsyn7l.cabal
--- a/mmsyn7l.cabal
+++ b/mmsyn7l.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                mmsyn7l
-version:             0.1.0.0
+version:             0.1.0.1
 synopsis:            A program and a library to modify the amplitude of the sound representations for the Ukrainian language created by mmsyn7ukr package.
 description:         A program and a library to modify the amplitude of the sound representations for the Ukrainian language created by mmsyn7ukr package or somehow otherwise.
 homepage:            https://hackage.haskell.org/package/mmsyn7l