A hydraulic fire door, especially a sliding door, which can be selectively opened or closed by an actuator. A control unit provided for the signal generator changes coefficients of the multipliers A and B and stops an output signal while maintaining a frequency of the output signal. The gaming device provides any outcomes associated with indicated symbols or combination of symbols. The information collectionmodificationdistribution apparatus distributes information including information such as an item of the information to be collected from the information providing apparatus, a time and a time range to collect and to distribute over a period of time in accordance with the request of an information user to an information using apparatus. A process for manufacturing such an assembly. The light is internally reflected along the light guide until it is coupled into an optical element of similar refractive index that is adjacent to the light guide in the vicinity of the display.