diff --git a/src/Probability/Core.idr b/src/Probability/Core.idr
index aaa7054..3661ae2 100644
--- a/src/Probability/Core.idr
+++ b/src/Probability/Core.idr
@@ -5,23 +5,24 @@ import Probability.Utils
 
 %default total
 
+%access export
+
 
 ||| Representation of a probability distribution
-abstract
 data Probability p a = Pr (List (a,p))
 
 
-%access public
-
-
 ---- Types ----
 
+public export
 Prob : Type -> Type
 Prob = Probability Double
 
+public export
 Transition : Type -> Type -> Type
 Transition a b = a -> Prob b
 
+public export
 Trans : Type -> Type
 Trans t = Transition t t
 
@@ -52,14 +53,14 @@ shape xs ps = Pr $ zipWith MkPair xs (normalize ps)
 
 ---- Instances ----
 
-instance Functor (Probability p) where
+Functor (Probability p) where
   map f (Pr l) = Pr $ left f <$> l
 
-instance Num p => Applicative (Probability p) where
+Num p => Applicative (Probability p) where
   pure     = certainly
   fm <*> m = Pr [ (f x, q*w) | (f,w) <- runProb fm, (x,q) <- runProb m ]
 
-instance Num p => Monad (Probability p) where
+Num p => Monad (Probability p) where
   d >>= f = Pr [ (y, q*w) | (x,w) <- runProb d, (y,q) <- runProb (f x) ]
 
 
diff --git a/src/Probability/Display.idr b/src/Probability/Display.idr
index 3763489..fe8eda1 100644
--- a/src/Probability/Display.idr
+++ b/src/Probability/Display.idr
@@ -21,10 +21,10 @@ intPart = cast . cast {to=Integer}
 fracPart : Double -> Double
 fracPart x = x - intPart x
 
-fpow f p = if p >= 0 then pow f (cast p)
-                     else 1 / (pow f $ cast $ abs p)
 ||| Raise a double to an arbitrary integral power
 fpow : Double -> Integer -> Double
+fpow f p = if p >= 0 then pow f (cast p)
+                     else 1 / (pow f $ cast $ abs p)
 
 
 ---- Display Bars ----
diff --git a/src/Probability/Examples/MontyHall.idr b/src/Probability/Examples/MontyHall.idr
index ad18120..a9042ed 100644
--- a/src/Probability/Examples/MontyHall.idr
+++ b/src/Probability/Examples/MontyHall.idr
@@ -11,13 +11,13 @@ import Data.Vect
 
 data Door = One | Two | Three
 
-instance Eq Door where
+Eq Door where
   One   == One   = True
   Two   == Two   = True
   Three == Three = True
   _     == _     = False
 
-instance Show Door where
+Show Door where
   show One   = "Door #1"
   show Two   = "Door #2"
   show Three = "Door #3"
@@ -47,10 +47,10 @@ score {k} v = case k of
 
 data GameScore = Score (Vect (S (S n)) Door)
 
-instance Eq GameScore where
+Eq GameScore where
   (Score v) == (Score w) = vecEq v w
 
-instance Show GameScore where
+Show GameScore where
   show (Score v) = let status = if score v then " WIN  " else " LOSE "
     in  status ++ show v
 
@@ -58,10 +58,10 @@ instance Show GameScore where
 
 data GameOutcome = Outcome (Monty (S (S n)))
 
-instance Eq GameOutcome where
+Eq GameOutcome where
   (Outcome v) == (Outcome w) = score v == score w
 
-instance Show GameOutcome where
+Show GameOutcome where
   show (Outcome v) = if score v then " WIN  " else " LOSE "
 
 
diff --git a/src/Probability/Monad.idr b/src/Probability/Monad.idr
index 3504244..6c6a484 100644
--- a/src/Probability/Monad.idr
+++ b/src/Probability/Monad.idr
@@ -3,6 +3,7 @@ module Probability.Monad
 
 %default total
 
+%access export
 
 infixr 6 >=>
 (>=>) : Monad m => (a -> m b) -> (b -> m c) -> a -> m c
diff --git a/src/Probability/Utils.idr b/src/Probability/Utils.idr
index 799f57d..07adedc 100644
--- a/src/Probability/Utils.idr
+++ b/src/Probability/Utils.idr
@@ -5,6 +5,7 @@ import Data.Vect
 
 %default total
 
+%access export
 
 infixl 5 ::~