The OpenVMS operating system command-line uses Ctrl+Y as its "abort" character, stronger in effect than the ordinary Ctrl+C "interrupt" character.
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 Borland IDEs it also deletes the current 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.5
In the pico and nano text editors this shortcut scrolls one page up.67
In SAP GUI it enters block-select mode.
"Keyboard shortcuts in Word". https://support.office.com/en-US/article/keyboard-shortcuts-for-microsoft-word-9a2e0234-e682-49ff-a4aa-999f07b51bf3 ↩
Apple Shortcut Key Standards https://developer.apple.com/library/mac/documentation/userexperience/conceptual/applehiguidelines/KeyboardShortcuts/KeyboardShortcuts.html ↩
WordStar Reference Card. San Rafael, CA: MicroPro. June 1980 – via archive.org. https://archive.org/stream/bitsavers_microProWoJun80_734543/Wordstar_Reference_Card_Jun80#page/n0/mode/2up ↩
Yanking - GNU Emacs Manual https://www.gnu.org/software/emacs/manual/html_node/emacs/Yanking.html ↩
"vi(1p) - Linux manual page". man7.org. Scroll Backward by Line. Archived from the original on 2023-07-18. Retrieved 2023-09-09. [count] -Y: Display the line count lines before the first line currently displayed. https://man7.org/linux/man-pages/man1/vi.1p.html ↩
"U-M Information and Technology Services". http://www.itcs.umich.edu/itcsdocs/r1168/ ↩
"Nano Keyboard Commands". Archived from the original on 2015-11-27. Retrieved 2015-12-09. https://web.archive.org/web/20151127221745/http://staffwww.fullcoll.edu/sedwards/Nano/NanoKeyboardCommands.html ↩