  An annulus SLE$_\kappa$ trace tends to a single point on the target circle,
and the density function of the end point satisfies some differential equation.
Some martingales or local martingales are found for annulus SLE$_4$, SLE$_8$
and SLE$_{8/3}$. From the local martingale for annulus SLE$_4$ we find a
candidate of discrete lattice model that may have annulus SLE$_4$ as its
scaling limit. The local martingale for annulus SLE$_{8/3}$ is similar to those
for chordal and radial SLE$_{8/3}$. But it seems that annulus SLE$_{8/3}$ does
not satisfy the restriction property.
