The present invention relates, for example, to a stimulus-indicating device. The railroad signaling system includes at least one railroad signal coupled to at least one elongated member adjacent to a railroad. Engaging elements are provided in the upper edges of the lateral walls for corresponding receiving elements in the base frame lower edges. In one embodiment of the invention, by elevating the inlet to the irradiation zone of the fluid treatment system with respect to the outlet, the amount of water that passes above the top lamp can be minimized, improving overall system performance. The present invention novel method can be used to form any type of stacked capacitors, for instance, a stacked capacitor, a fin-type stacked capacitor, a crown-type stacked capacitor, etc. Determination on which piece of the individual information has already been read information in the terminal is made possible by causing each piece of the information to have individual update information as server side document information and comparing the update information with update information in the client terminal side.