For example, a function key might be programmed for use as a help key when a terminal is used for word processing.

例如，当终端被用来进行文字处理时，可通过编程把一个功能键用作帮助键。

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A key on a computer terminal which, when pressed in conjunction with another key, is used to perform a control or manipulation function,? E. g.,? To terminate an editing operation.

一种计算机终端上的按键，当它与另一个键同时按下时被用来实现一种控制或操纵功能，例如终止一个编辑操作。

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