The OpenVMS operating system command-line uses Ctrl+ Y as its 'abort' character, stronger in effect than the ordinary Ctrl+ C 'interrupt' character.Ĭtrl+ Y deleted the current line in the WordStar word processor for CP/M and MS-DOS. But quite a few remain where only one or the other shortcut works. Many programs (on all systems including Linux) support both Ctrl+ Y and Ctrl+ ⇧ Shift+ Z for Redo to resolve this conflict. 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. Īpple Macintosh systems use ⇧ Shift+ ⌘ Command+ Z for Redo. In some programs such as Microsoft Office it repeats the previous action if it was something other than Undo. In most Windows applications this keyboard shortcut functions as Redo, reversing a previous Undo. It is generated by holding Ctrl and pressing the Y key on most Computer Keyboards.
