A combined bidet and toilet system is provided for a toilet in transportation having a spray nozzle and a flow rate restrictor. The method includes the steps of determining a position of the work implement, determining a direction of travel of the machine, and responsively determining the cross slope. The first and second filters have adjacent mutually exclusive narrow band pass characteristics only one of which corresponds to the electromagnetic wavelength absorption characteristic of the gas. The prismatic strut core inserts and places between the two extended portions with the coil pressed against the side portion. The detent mechanism may be activated by various means including fluidic means, mechanical means, electromechanical means, and the like.