Control-V

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In computing, Control-V is a control character in ASCII code, also known as the synchronous idle (SYN) character. It is generated by pressing the V key while holding down the Ctrl key on a computer keyboard.

In many GUI environments, including Microsoft Windows and most desktop environments based on the X Window System, and in applications such as word processing software running in those environments, control-V can be used to paste text from the clipboard at the current cursor position. Control-V was one of a handful of keyboard sequences chosen by the program designers at Xerox PARC to control text editing. Presumably these particular keystrokes were chosen because of their location on a standard QWERTY keyboard, since the Z (undo), X (cut), C (copy), and V (paste) keys are located together at the left end of the bottom row of the standard QWERTY keyboard. The equivalent Mac OS key combination on Apple computers is Command-V.

IBM Input/output devices utilizing the bisync link protocol use the SYN character code to signal the beginning of each data frame transmitted.

[edit] Representation

  • ASCII and Unicode representation of "Synchronous Idle":
    Octal code: 26
    Decimal code: 22
    Hexadecimal code: 16, U+0016
    Mnemonic symbol: SYN

[edit] See also