function key (n)~ Any of the 10 or more keys labeled F1 F2 F3 and so o…
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function key (n)~ Any of the 10 or more keys labeled F1 F2 F3 and so on that are placed along the left side or across the top of a keyboard (or both) and are used for special tasks by different programs. The meaning of a function key is defined by a program or in some instances by the user. Function keys are used in application programs or the operating system to provide either a shortcut for a series of common instructions (such as calling up a program’s on-screen help facility) or a feature that is not otherwise available. function library (n)~ A collection of routines compiled together.