diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -27,3 +27,7 @@
 * Second version. Added the functions to read the HashCorrections data and the other needed for
 countHashesG function.
 
+## 0.2.0.1 -- 2023-03-10
+
+* Second version revised A. Some documentation improvement.
+
diff --git a/rhythmic-sequences.cabal b/rhythmic-sequences.cabal
--- a/rhythmic-sequences.cabal
+++ b/rhythmic-sequences.cabal
@@ -2,7 +2,7 @@
 name:               rhythmic-sequences
 
 -- The package version.
-version:            0.2.0.0
+version:            0.2.0.1
 
 -- A short (one-line) description of the package.
 synopsis:
diff --git a/src/Rhythmicity/MarkerSeqs.hs b/src/Rhythmicity/MarkerSeqs.hs
--- a/src/Rhythmicity/MarkerSeqs.hs
+++ b/src/Rhythmicity/MarkerSeqs.hs
@@ -150,8 +150,11 @@
 -- instead of dots specify some digits that are the beginning of the ['Int8'] list in
 -- 'HashCorrections'.
 -- Caution: 
+-- 
 -- > readHashCorrections . show $ xs /= xs
+--
 -- > show . readHashCorrections $ xs /= xs
+--
 -- in general case. The default value is @H [0,0..] 0@.
 readHashCorrections :: String -> HashCorrections
 readHashCorrections xs = if length ys > 1 then let (ts,us) = splitAt 1 ys in H (map (\x -> read [x]::Int8) us) (read ts::Int8) else H [0,0..] 0