A module or dispenser for dispensing at least one liquid filament onto a moving substrate includes a nozzle body having a liquid supply port, a liquid discharge portion or end, and a liquid discharge passage having an orifice in fluid communication with the liquid supply port. These compounds are useful for physiological and organ function monitoring. The marked entered information may be corrected by erasing the written information with a pencil eraser and writing new information on the paper with a pencil. The method of generating a clock signal includes synchronizing an internal clock signal to an external clock signal, and delaying the internal clock signal different amounts based on a selection value indicative of external clock frequency to provide the clock signal. Alternatively or in addition, the length of time until the next calibration is estimated. The teacher, or teacher and director together, assemble an electronic student workbook containing instructional materials correlated with the student profile.