A function key is a key on a computer or terminal keyboard which can be programmed so as to cause an operating system command interpreter or application program to perform certain actions, a form of soft key. On some keyboards/computers, function keys may have default actions, accessible on power-on.
Surge definition, a strong, wavelike, forward movement, rush, or sweep: the onward surge of an angry mob. See more.
Blower surge is one of those hot-rod dynamics that presents a paradox to enthusiasts. In one ear it sounds like the engine is struggling if not defective. Then the other ear is treated to a throbbing cadence of performance pulses that help define a unique cool factor that not everyone understands. On one hand blower surge can be so smooth and melodic that itâll put a crying baby to sleep.