Constants

Vector3

Vector3.right (1, 0, 0)
Vector3.left (-1, 0, 0)
Vector3.up (0, 1, 0)
Vector3.down (0, -1, 0)
Vector3.forward (0, 0, 1)
Vector3.back (0, 0, -1)
Vector3.zero (0, 0, 0)
Vector3.one (1, 1, 1)

Vector2

Vector2.right (1, 0)
Vector2.left (-1, 0)
Vector2.up (0, 1)
Vector2.down (0, -1)
Vector2.zero (0, 0)
Vector2.one (1, 1)

Additional constants

myVector.magnitude Length of this Vector
myVector.normalized Keeps direction, but reduces length to 1