diff --git a/antigen.cabal b/antigen.cabal
--- a/antigen.cabal
+++ b/antigen.cabal
@@ -1,6 +1,6 @@
 cabal-version:      3.0
 name:               antigen
-version:            0.1.0.0
+version:            0.1.1.0
 synopsis:           Negatable QuickCheck generators 
 description:
   AntiGen is a library that helps with generating negative examples from a 
diff --git a/src/Test/AntiGen/Internal.hs b/src/Test/AntiGen/Internal.hs
--- a/src/Test/AntiGen/Internal.hs
+++ b/src/Test/AntiGen/Internal.hs
@@ -55,6 +55,8 @@
   resize n = mapGen (resize n)
   choose = liftGen . choose
 
+-- | Create a negatable generator by providing a positive and a negative 
+-- generator
 (|!) :: Gen a -> Gen a -> AntiGen a
 pos |! neg = AntiGen $ F $ \p b -> b $ BiGen pos (Just neg) p
 
@@ -124,8 +126,14 @@
 evalPartial :: PartialGen a -> a
 evalPartial (PartialGen (F m)) = m id continue
 
+-- | Create a negative generator from an `AntiGen` by introducing at most 
+-- `n` mistakes. If there are no negatable generators in the `AntiGen`, it will
+-- return a positive generator. Also if the number of negatable generators in 
+-- the `AntiGen` is lower than `n`, then the number of negations will be less
+-- than `n`.
 zapAntiGen :: Int -> AntiGen a -> Gen a
 zapAntiGen n = fmap evalPartial <$> zapNTimes n <=< evalToPartial
 
+-- | Create a positive generator from the provided `AntiGen`.
 runAntiGen :: AntiGen a -> Gen a
 runAntiGen ag = evalPartial <$> evalToPartial ag