An apparatus and methods for feature selection and classifier builder are disclosed. The compositions can be applied topically to the skin. The data entries are transmitted from the electronic scheduler to a call processing control record generator. The vehicle simulator permits simulation of the action of a driver putting hisher foot on a road surface to achieve more realistic simulation. By providing a filter circuit, whose cut-off frequency may be switched, in the main amplifier, the bandwidth of the optical receiver may be varied. An automation mechanism is used to selectively move the arm of the figure over the game board during play without touching the game board.