immutable :: 1
mutable := 2
typed_immutable: i32: 3
typed_mutable: i32 = 4
deferred: i32
deferred = 5
then :: 6

(left, right) :: (1, 2)
(mutable_left, mutable_right) := (3, 4)

Point :: &{
    x: i32:
    y: i32 =
}

point := &Point.{ x: 10; y = 20 }
{x as horizontal, y} :: point