driver
n. 1. The main loop of an event-processing program;
the code that gets commands and dispatches them for execution.
2. [techspeak] In `device driver', code designed to handle a
particular peripheral device such as a magnetic disk or tape unit.
3. In the TeX world and the computerized typesetting world in
general, a program that translates some device-independent or other
common format to something a real device can actually
understand.
