Mechanisms and techniques are provided which allow a server computer system, such as a web server, to generate information, such as a web page, which includes an audio resource locator configured in accordance with the invention. In an exemplary embodiment, the apparatus comprises a hollow syringe defining a vessel having an open end; a plunger, slidingly and sealingly disposed within the vessel; and a flexible delivery tube, having a first end sealingly coupled to the open end and a delivery end for dispensing the liquid proximate the orifice. The method comprises traversing a logical tree structure representing the data abstraction model. The slider is pressed by pressing forces of a pair of coil springs so that the movement of the slider is smooth.