diff --git a/System/UTF8IO.hs b/System/UTF8IO.hs
--- a/System/UTF8IO.hs
+++ b/System/UTF8IO.hs
@@ -10,7 +10,7 @@
 --
 -- "System.UTF8IO" defines the same entities as "System.IO" but with UTF8 text I/O operations.
 --
--- "System.UTF8IO" re-exports "System.IO.UTF8" and "System.IO" but hides the duplicate definitions (in favor of "System.IO.UTF8").
+-- "System.UTF8IO" re-exports "System.IO.UTF8" (utf8-string package) and "System.IO" but hides the duplicate definitions (in favor of "System.IO.UTF8").
 
 module System.UTF8IO
     ( module System.IO
@@ -50,6 +50,8 @@
     , hGetChar
     , hLookAhead
     , hPrint
+    , openBinaryFile
+    , withBinaryFile
     )
 
 import qualified System.IO
@@ -71,7 +73,7 @@
 -- | Computation 'hPutChar' @hdl ch@ writes the character @ch@ to the file or channel managed by @hdl@. 
 -- Characters may be buffered if buffering is enabled for @hdl@. 
 --
--- Note: The implementation of 'hPutChar' is not efficient.
+-- Note: The implementation of 'hPutChar' is not as efficient as it could be.
 
 hPutChar    :: Handle -> Char -> IO ()
 hPutChar h c = hPutStr h [c]
@@ -79,7 +81,7 @@
 -- | Computation 'hGetChar' @hdl@ reads a character from the file or channel 
 -- managed by 'hdl', blocking until a character is available.
 --
--- Note: The implementation of 'hGetChar' is not efficient.
+-- Note: The implementation of 'hGetChar' is not as efficient as it could be.
 
 hGetChar    :: Handle -> IO Char
 hGetChar h  = do     
@@ -121,7 +123,7 @@
 -- | Write a character to the standard output device
 -- (same as 'hPutChar' 'stdout').
 --
--- Note: The implementation of 'putChar' is not efficient.
+-- Note: The implementation of 'putChar' is not as efficient as it could be.
 
 putChar     :: Char -> IO ()
 putChar c   =  hPutChar stdout c
@@ -129,7 +131,7 @@
 -- | Read a character from the standard input device
 -- (same as 'hGetChar' 'stdin').
 --
--- Note: The implementation of 'getChar' is not efficient.
+-- Note: The implementation of 'getChar' is not as efficient as it could be.
 
 getChar     :: IO Char
 getChar     =  hGetChar stdin
diff --git a/utf8-prelude.cabal b/utf8-prelude.cabal
--- a/utf8-prelude.cabal
+++ b/utf8-prelude.cabal
@@ -1,11 +1,9 @@
 name:           utf8-prelude
-version:        0.1.3
-synopsis:       Prelude and System.IO with UTF8 text I/O
+version:        0.1.4
+synopsis:       Variants of Prelude and System.IO using UTF8 text I/O operations and an UTF8 testing tool
 description:    
-    utf8-prelude provides variants of "Prelude" and "System.IO" using UTF8 text I/O operations, making 
-    UTF8 text I/O even simpler.
-    .
-    Three simple steps to switch to UTF8 with your Haskell code:
+    If you want your Haskell code to have UTF8 text I/O then use libraries which have UTF8 text I/O.
+    In case of Prelude with this package only three mechanical steps needed:
     .
     * In all modules import Prelude explicitly and replace every occurrence of "Prelude" with "UTF8Prelude".
     .
@@ -13,15 +11,13 @@
     .
     * In all modules replace every occurrence of "System.IO" with "System.UTF8IO".
     .
-    utf8-prelude also provides a basic testing tool:
     utf8-test tests several functions regarding UTF8 text I/O.
-    Note: utf8-test creates a file named writeFile_test.txt in the current working directory.
+    Note: utf8-test creates a file named writeFile_test.txt (5,3K) in the current working directory.
     .
     utf8-prelude is based on utf8-string:
     <http://hackage.haskell.org/cgi-bin/hackage-scripts/package/utf8-string/index.html>
     .
-    This package will be obsolate with GHC if GHC will have porper unicode support for text I/O.
-    It is planned beyond GHC 6.10: 
+    This package will be obsolete *after* GHC 6.10: 
     <http://hackage.haskell.org/trac/ghc/wiki/Status/Releases>
 category:       System
 author:         Péter Diviánszky <divip@aszt.inf.elte.hu>
@@ -30,7 +26,7 @@
 license:        BSD3
 license-file:   LICENSE
 stability:      alpha
-tested-with:    GHC == 6.8.2
+tested-with:    GHC == 6.8.2 && == 6.10.0.20081007
 build-type:     Simple
 cabal-version:  >=1.2
 data-files:     readFile_test.txt,
@@ -40,7 +36,7 @@
     ghc-options:    -Wall
     build-depends:
         base,
-        utf8-string
+        utf8-string >= 0.3.2 && < 0.3.3
 
     exposed-modules:
         UTF8Prelude,