A luminaire and a method for controlling a luminaire are disclosed. A distance calculator 47 determines the distance from a microphone 21 to a user uttering. In one embodiment, the linear product is fed through a guiding means carried by said traverse arm to be discharged adjacent a receiving spool. A second region bears the first probe without the second probe and a third region bears the second probe without the first probe. The digital link is further adapted to relay a timing signal at a fixed timing rate, when the timing signal is embedded in the payload at a selectable payload rate. A dual \u201cFigure-Eight\u201d watercourse includes a simulated jump ramp and an underground tunnel arrangement.