  The purpose of this note is to describe a framework which unifies radial,
chordal and dipolar SLE. When the definition of SLE(kappa;rho) is extended to
the setting where the force points can be in the interior of the domain, radial
SLE(kappa) becomes chordal SLE(kappa;rho), with rho=kappa-6, and vice versa. We
also write down the martingales describing the Radon-Nykodim derivative of
SLE(kappa;rho_1,...,rho_n) with respect to SLE(kappa).
