A backlit display apparatus illuminates a film for displaying one or more images. A pilot substrate subjected to a series of processing as preprocessing is transported to an inspection unit. A first state that the capacitance is connected to an input end of a current signal, a second state that the capacitance is connected to an output end of a voltage signal, and a third state that the capacitance is connected to a side of a filter capacitance, are cycled. The notification of the deletion event can be enabled by configuring a number of notification options maintained for each user profile by the digital playback device at a predefined time. The station includes a sensor for ascertaining the fluid level in the reservoir in communication with the controller, a readerwriter for communicating with the controller, and a smart card adapted to be read by the reader writer. An example of a method of the present invention is a method of cementing a subterranean formation, comprising: providing a cement composition comprising water, a hydraulic cement, and an additive comprising maltodextrin; placing the cement composition in a subterranean formation; and permitting the cement composition to set in the formation.