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Backspace key. Backspace (← Backspace) is the keyboard key that in typewriters originally pushed the carriage one position backwards, and in modern computer systems typically moves the display cursor one position backwards, [note 1] deletes the character at that position, and shifts back any text after [note 2] that position by one character.
Xfce keyboard layout settings window, featuring a compose-key option. A compose key (sometimes called multi key) is a key on a computer keyboard that indicates that the following (usually 2 or more) keystrokes trigger the insertion of an alternate character, typically a precomposed character or a symbol. [1]
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 their current task, such as using a specific function in an application program.
Although it varies by keyboard type, the space bar usually lies between the Alt key (or Command keys on Macintosh keyboards) and below the letter keys: C, V, B, N and M on a standard QWERTY keyboard. In some keyboards, both physical and specially virtual ones, the U+2423 ␣ OPEN BOX symbol is used to label the space bar.
The function keys, navigation keys, and modifiers such as ⇧ Shift, PgUp, etc. are set between the key groups for use with the thumbs. For these keyboards, the resulting bowl-like key surfaces are intended to minimize and make consistent the finger extension required to strike keys away from the home row. [ 16 ]
In 1940, James Koca filed for a patent on a mechanism allowing the tab stops for each column to be set and cleared from the keyboard, eliminating the need for the typist to bend over the back of the machine to directly manipulate the tab rack. [6] These keys, if present, are typically labeled tab set and tab clear.
The keyboard sends the key code to the keyboard driver running in the main computer; if the main computer is operating, it commands the light to turn on. All the other indicator lights work in a similar way. The keyboard driver also tracks the shift, alt and control state of the keyboard.
Similarly, the History key will populate the command-line with previously used functions in reverse chronological order, as the ↑ key function does in certain command prompts. The yellow hotkeys along the top of the keyboard are used to enter market sectors, and are generally used as suffixes to allow the terminal to correctly identify a ...