Set: pp::colors
  Set: pp::unicode
sig (x y : ℕ) (z : Bool), x > y ∧ z : Type
ℕ ⨯ ℕ : Type
ℕ ⨯ Bool ⨯ ℕ : Type
ℕ ⨯ Bool ⨯ ℕ : Type
ℕ ⨯ Type ⨯ ℕ : (Type 1)
  Set: pp::unicode
Nat # Nat : Type
Nat # Bool # Nat : Type
  Set: pp::unicode