diff --git a/Data/Encoding.hs b/Data/Encoding.hs
index c0a020a..3127c06 100644
--- a/Data/Encoding.hs
+++ b/Data/Encoding.hs
@@ -49,6 +49,7 @@ instance Encoding DynEncoding where
 	decodeLazy (DynEncoding enc) = decodeLazy enc
 	decodable (DynEncoding enc) = decodable enc
 
+-- | Takes the name of an encoding and creates a dynamic encoding from it.
 encodingFromString :: String -> DynEncoding
 encodingFromString "ASCII"	= DynEncoding ASCII
 encodingFromString "UTF-8"	= DynEncoding UTF8
diff --git a/Data/Encoding/ASCII.hs b/Data/Encoding/ASCII.hs
index d3583fc..1a2acda 100644
--- a/Data/Encoding/ASCII.hs
+++ b/Data/Encoding/ASCII.hs
@@ -1,3 +1,7 @@
+-- | ASCII (American Standard Code for Information Interchange) is the
+--   \"normal\" computer encoding using the byte values 0-127 to represent
+--   characters. Refer to <http://en.wikipedia.org/wiki/ASCII> for
+--   more informations.
 module Data.Encoding.ASCII
 	(ASCII(..)) where
 
diff --git a/Data/Encoding/ISO88591.hs b/Data/Encoding/ISO88591.hs
index 24d15ed..6c9be94 100644
--- a/Data/Encoding/ISO88591.hs
+++ b/Data/Encoding/ISO88591.hs
@@ -1,3 +1,6 @@
+{- | Implements ISO\/IEC 8859-1 alias latin-1 encoding. See
+     <http://en.wikipedia.org/wiki/ISO/IEC_8859-1> for further informations.
+ -}
 module Data.Encoding.ISO88591
 	(ISO88591(..)
 	) where
diff --git a/Data/Encoding/ISO88592.hs b/Data/Encoding/ISO88592.hs
index acb5a43..b75c4d4 100644
--- a/Data/Encoding/ISO88592.hs
+++ b/Data/Encoding/ISO88592.hs
@@ -1,3 +1,6 @@
+{- | Implements ISO\/IEC 8859-2 alias latin-2 encoding. See
+     <http://en.wikipedia.org/wiki/ISO/IEC_8859-2> for further informations.
+ -}
 module Data.Encoding.ISO88592
 	(ISO88592(..)) where