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Control-Y is a common computer command. It is generated by pressing the Y Key at the same time as the Control key on most Computer Keyboards. In graphical user interface environments that use the control key to control the active program, control-Y is often used to redo actions.

Control+Yis mapped to "delete line" in the WordStar word processor for CP/M and MS-DOS.[1] In the 1980s, many text editors and word processors mimicked the WordStar command set, making Control+Y a common synonym for "delete line."

In specific applicationsEdit

⌘ Command+Y usually does not have this meaning in the Apple Macintosh operating system, where ⇧ Shift+⌘ Command+Z often does it.[2]

For Linux programs, Control+Y usually does nothing or functions as redo. In many applications, redo is handled by ⇧ Shift+Control+Z.[citation needed]

In emacs, Control+Y does a paste action (known as "yank").[3]

In vi and vim Control+Y scrolls the page up, line by line[citation needed].

In the pico and nano text editors shortcut scrolls one page up.[4][5]

In SAPgui Control+Y enters block-select mode, allowing the user to select text from a fixed-width text output such as an ABAP report. The mouse cursor turns into a cross-hair and the user can drag it across some text in order to select it (text in reports is not selectable across vertical text lines in SAPGui).[citation needed]

In Microsoft Office this keyboard shortcut functions as redo: it repeats the previous action.[6]

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