diff --git a/AAI.cabal b/AAI.cabal
--- a/AAI.cabal
+++ b/AAI.cabal
@@ -1,5 +1,5 @@
 name:                   AAI
-version:                0.1.0.0
+version:                0.2.0.0
 synopsis:               Abstract Application Interface.
 description:            The Abstract Application Interface is used to define a
                         generic interface for handling command line parameter
@@ -14,6 +14,7 @@
 build-type:             Simple
 extra-source-files:     README.md
                   ,     LICENSE
+                  ,     changelog.md
 cabal-version:          >=1.10
 
 source-repository head
@@ -23,7 +24,7 @@
 source-repository this
   type:                 git
   location:             https://github.com/aka-bash0r/AAI
-  tag:                  v0.1.0.0
+  tag:                  v0.2.0.0
 
 library
   exposed-modules:      Control.Command
@@ -31,3 +32,4 @@
   build-depends:        base >=4.8 && <4.9
   hs-source-dirs:       src
   default-language:     Haskell2010
+
diff --git a/changelog.md b/changelog.md
new file mode 100644
--- /dev/null
+++ b/changelog.md
@@ -0,0 +1,9 @@
+# Changelog
+
+## v0.2.0.0
+* Changed the interface of help from Command type class.
+* Changed routing mechanism to not execute immediately.
+
+## v0.1.0.0
+Initial release of the AAI.
+
diff --git a/src/Control/Command.hs b/src/Control/Command.hs
--- a/src/Control/Command.hs
+++ b/src/Control/Command.hs
@@ -21,5 +21,5 @@
     -- | Execute a command.
     execute :: a -> [String] -> IO ()
     -- | Execute the help of a command.
-    help    :: a -> [String] -> IO ()
+    help    :: a -> String
 
diff --git a/src/Control/Router.hs b/src/Control/Router.hs
--- a/src/Control/Router.hs
+++ b/src/Control/Router.hs
@@ -13,7 +13,6 @@
 -}
 module Control.Router
 ( Router (..)
-, ErrorHandler
 , route
 ) where
 
@@ -26,21 +25,10 @@
     -- | Checks if a command is routable to a specific command name.
     routes :: a -> String -> Bool
 
--- | A simple error handling function.
-type ErrorHandler = String -> IO ()
-
 -- | Route a specific instruction to a command.
-route :: (Command a, Router a) => ErrorHandler -> [a] -> [String] -> IO ()
-route eh cmds []         = eh "Empty argument list. Cannot route command."
-route eh cmds (cmd:args) =
-    case findCommand cmd cmds of
-      Just a  -> execute a args
-      Nothing -> eh ("Command " ++ cmd ++ " is unknown.")
-  where
-    findCommand _   []     =
-      empty
-    findCommand cmd (x:xs) =
-      if routes x cmd
-         then return x
-         else findCommand cmd xs
+route :: (Command a, Router a, Alternative m, Monad m) => [a] -> String -> m a
+route (x:xs) cmd =
+    if routes x cmd
+       then return x
+       else route xs cmd