  This document records the results of a comparison of the interferometer
simulation Finesse against an analytic (MATLAB based) calculation of the
alignment sensing signals of a Fabry Perot cavity. This task was started during
the commissioning workshop at the LIGO Livingston site between the 28.1. and
1.02 2013 with the aim of creating a reference example for validating numerical
simulation tools. The FFT based simulation OSCAR joined the battle later.
