This application is directed towards an article of footwear for deeply and quickly penetrating a turf surface, such as a soccer, rugby or football shoe. A communication element is interposed between a data processing system and a print server, where the print server does not support a bi-directional communication protocol utilized by the data processing system to download encrypted double-byte font scripts. Specifically, the distribution of intensity of light in the minor-axis direction is narrowed by the optical system provided between the light source and the diffuser sheet. The trowel may also have a curved side edge for rounding the concrete where it contacts the form. The charge pump has at least a current control element on the charge path or the discharge path to control the current flowing therethrough according to an output-dependent feedback signal. The pneumatic system includes a pressurized reservoir for holding pressurized air and selectively releases pressurized air from the reservoir to the mattress.