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Launch control
Automatic device that helps the driver to get moving as fast as possible from the start line without stalling. When driver activates the launch control, it keeps engine running at pre-set optimum revs regardless of the actual throttle pedal position. Most often the launch control is tied to the hand brake and at release of that, launch control engages the clutch and launches the car into the stage.
Leg
Each part of the rally, separated by fixed minimum stopping (resting) time. In modern times, each day of rally is different leg but earlier leg could span two days with little rest (see for example 1973 RAC Rally).
Left-foot braking
A technique originally designed to drive front-wheel drive cars around bends and later used to eliminate turbo-lag by keeping turbo spinning in early turbo-charged cars. Instead of lifting while braking, driver kept accelerator pressed and hence engine revving. With current semiautomatic gearboxes drivers do not need to use clutch except when starting so left-foot braking is easy.
Line
Used by some crews in notes to remind them to keep racing line in preparation to approaching corner. Used in conjunction with multiple bends in rapid succession.
Longitudinal
A configuration of components, usually used of engine and gearbox, that are placed lengthwise. See also transverse.
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Diagram of transverse engine - longitudinal gearbox configuration
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