adamc@239: con id = fn t :: Type => t
adamc@239: con id2 = fn (t :: Type) => id t
adamc@239: con id3 = fn t => id2 t
adamc@239: 
adamc@239: con pair = fn (t :: Type) (u :: Type) => (t, u)
adamc@239: con pair2 = fn t u => pair t u
adamc@239: con pair3 = fn t (u :: Type) => pair2 t u