Help key

A Help key, found in the shape of a dedicated key explicitly labeled Help, or as another key, typically one of the function keys, on a computer keyboard, is a key which, when pressed, produces information on the screen/display to aid the user in his/her current task, such as using a specific function in an application program.

In the case of a non-dedicated Help key, the location of the key will sometimes vary between different software packages. Most common in computer history, however, is the development of a de facto Help key location for each brand/family of computer, exemplified by the use of F1 on IBM compatible PCs.

The standard help key on the Apple IIe and Apple III series computers is either OPEN-APPLE-? or SOLID-APPLE-? ... The standard help key on the Apple II and Apple II Plus, where practical, is a question mark or slash, or else ESCAPE ? or ESCAPE /.

On a full-sized Apple keyboard, the help key was labelled simply as Help, located to the left of the Home. Where IBM compatible PC keyboards had the Insert, Apple keyboards had the help key instead. As of 2007, new Apple keyboards do not have a help key. In its place, a full-sized Apple keyboard has a Fn instead. Instead of a mechanical help key, the menu bar for most applications contain a Help menu as a matter of convention.

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