diff --git a/src/Project/Cesk.agda b/src/Project/Cesk.agda
index 639e313..a7b79b2 100644
--- a/src/Project/Cesk.agda
+++ b/src/Project/Cesk.agda
@@ -17,8 +17,8 @@ astep (suc c) e = suc $ astep c e
 astep (` id) e = lookup e id
 astep (ƛ body) e = clo body e
 
-inject : (A : Type) → Exp ∅ A → State A
-inject A C = mkState A ∅ C ∅ halt
+inject : {A : Type} → Exp ∅ A → State A
+inject {A} C = mkState A ∅ C ∅ halt
 
 step : ∀ {Tω : Type} → State Tω → StepResult Tω
 step (mkState Tc Γ (case c cz cs) E K) with ⦅ astep c E , astep cs E ⦆
@@ -33,7 +33,7 @@ step (mkState Tc Γ (atomic x) E K) with K
 ... | halt = done $ astep x E
 ... | kont l = part $ do-kont l $ astep x E
 step (mkState Tc Γ (call/cc C) E K) =
-  part $ mkState ({!   !} k⇒ {!   !}) Γ {!  !} {!   !} {!   !}
+  part $ mkState (({!   !} ⇒ {!   !}) k⇒ {!   !}) Γ {!  !} {!   !} {!   !}
 
 -- 3 + (call/cc k . k 2 + k 4)
 -- (k . k 2 + k 4) (\x . 3 + x)
diff --git a/src/Project/Syntax.agda b/src/Project/Syntax.agda
new file mode 100644
index 0000000..1648806
--- /dev/null
+++ b/src/Project/Syntax.agda
@@ -0,0 +1,21 @@
+module Project.Syntax where
+
+open import Data.String using (String)
+
+data Type : Set where
+
+data Term : Set where
+  -- Natural numbers
+  zero : Term
+  suc : Term → Term
+
+  -- Functions
+  `_ : String → Term
+  ƛ_⇒_ : String → Term → Term
+
+  -- Call/cc
+  call/cc : Term → Term
+
+data TermEnv : Set where
+  ∅ : TermEnv
+  _[_∶_] : TermEnv → String → Type → TermEnv
\ No newline at end of file
diff --git a/src/Project/notes.txt b/src/Project/notes.txt
new file mode 100644
index 0000000..59df81d
--- /dev/null
+++ b/src/Project/notes.txt
@@ -0,0 +1,17 @@
+-- Assume double is a language construct that doubles a number
+
+State {
+  Tc = ?
+  Ctx = nil
+  C = double (call/cc k . suc k)
+  E = []
+  K = halt
+}
+
+State {
+  Tc = ?
+  Ctx = nil
+  C = x * 2
+  E  = [x = call/cc k . suc k]
+  K = halt
+}
\ No newline at end of file