Control-Y

Control-Y is a common computer command. It is generated by holding Ctrl and pressing the Y key on most Computer Keyboards.

In most Windows applications this keyboard shortcut functions as Redo, reversing a previous Undo. In some programs such as Microsoft Office it repeats the previous action if it was something other than Undo.^[1]

Apple Macintosh systems use ⇧ Shift+⌘ Command+Z for Redo.^[2] In general a shortcut on Macintosh using ⌘ Command matches up with a shortcut on Windows using Ctrl, this is one of the most noticeable conflicts.

Many programs (on all systems including Linux) support both Ctrl+Y and Ctrl+⇧ Shift+Z for Redo, due to this conflict. But quite a few remain where only one or the other shortcut works.

Older applications

Ctrl+Y deleted the current line in the WordStar word processor for CP/M and MS-DOS.^[3] In the 1980s, many text editors and word processors mimicked the WordStar command set, making Ctrl+Y a common synonym for "delete line."

In emacs it does a paste action (known as "yank").^[4] Emacs uses Ctrl+/ for Undo and Redo.

In vi and vim it scrolls the display up one line.^{[citation needed]}

In the pico and nano text editors this shortcut scrolls one page up.^[5]^[6]

In SAPgui it enters block-select mode.^{[citation needed]}

References

^ https://support.office.com/en-US/article/keyboard-shortcuts-for-microsoft-word-9a2e0234-e682-49ff-a4aa-999f07b51bf3
^ Apple Shortcut Key Standards
^ WordStar Reference Card. San Rafael, CA: MicroPro. June 1980. {{cite book}}: |website= ignored (help)
^ Yanking - GNU Emacs Manual
^ http://www.itcs.umich.edu/itcsdocs/r1168/
^ "Archived copy". Archived from the original on 2015-11-27. Retrieved 2015-12-09. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)CS1 maint: archived copy as title (link)

Older applications

References

See also