The Free Online Dictionary of Computing (http://foldoc.doc.ic.ac.uk/) is edited by Denis Howe <dbh@doc.ic.ac.uk>.

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driver

1. <operating system> device driver.

2. <programming> The main loop of an event-processing program; the code that gets commands and dispatches them for execution.

3. <tool> In the TeX world and the computerised typesetting world in general, a program that translates some device-independent or other common format to something a real device can actually understand.

[Jargon File]