From 65f1af1154d5b6dc03f834dfe0af06bdce2f8fb6 Mon Sep 17 00:00:00 2001
From: Rob Rix <rob.rix@me.com>
Date: Thu, 21 Dec 2017 10:46:53 -0500
Subject: [PATCH] :memo: Dead.

---
 src/Control/Monad/Effect/Dead.hs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/Control/Monad/Effect/Dead.hs b/src/Control/Monad/Effect/Dead.hs
index 35887a5c4..47a6ece90 100644
--- a/src/Control/Monad/Effect/Dead.hs
+++ b/src/Control/Monad/Effect/Dead.hs
@@ -6,6 +6,7 @@ import Control.Monad.Effect.State
 import Data.Semigroup
 import Data.Set
 
+-- | A set of “dead” (unreachable) terms.
 newtype Dead a = Dead { unDead :: Set a }
   deriving (Eq, Foldable, Semigroup, Monoid, Ord, Show)