A telescoping slide assembly includes interconnected load-carrying, intermediate, and stationary slides. The device includes an electronically controllable jetting device in communication with a source of a pharmacologically active material and a solid or fluidic mixing medium for receiving the ejected pharmacologically active material and directing it toward an end use destination. In this way, an optical delay line to generate a specific time delay for controlling optical signals can be provided in small dimensions and with a small number of components. Finally, redundant field pictures produced by the pull-down process can be selectively dropped to increase a playback speed of the presentation. In combination these traits set RFD-S019 apart from all other existing varieties of Salvia known to the inventor.