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A QWERTY keyboard layout with the position of Control, Alt and Delete keys highlighted. Control-Alt-Delete (often abbreviated to Ctrl+Alt+Del and sometimes called the "three-finger salute" or "Security Keys") [1] [2] is a computer keyboard command on IBM PC compatible computers, invoked by pressing the Delete key while holding the Control and Alt keys: Ctrl+Alt+Delete.
Super+L (GNOME) [6] or Ctrl+Alt+L: Search+L: Log out user ⇧ Shift+⌘ Cmd+Q: Ctrl+Alt+Delete: Ctrl+⇧ Shift+Q (Twice) Switch active user ⊞ Win+L [notes 3] Applications menu ⊞ Win or Ctrl+Esc: Ctrl+F2, then "n" [notes 2] Super or Ctrl+Esc: Search: Run application ⊞ Win, enter executable name or. ⊞ Win+R, enter executable name
CTRL + Alt + Delete (Del): open the Windows Task Manager application. CTRL + W: close a browser tab, window, or open file. F5: instantly refresh the current page in your browser.
Mozilla Firefox 1.5 on Windows: hold Alt, press access key; Mozilla Firefox before version 14 on Mac OS X: hold Control, press access key; Safari 3 or earlier on Mac OS X: hold Control, press access key; Camino : hold Control, press access key; Opera 12 and lower: press and release ⇧ Shift+Esc, then press access key
The Alt key is well known as part of the key combinations: Ctrl+Alt+Delete may restart the computer (its original function); in some operating systems it brings up a task manager - see Control-Alt-Delete. Alt+⌘ Cmd+Esc (often referred to as ⌘ Cmd+⌥ Opt+Esc.) brings up the Force Quit window in Apple's macOS, see Option key.
Default Emacs keybindings include Ctrl+X Ctrl+S to save a file or Ctrl+X Ctrl+B to view a list of open buffers. Emacs uses the letter C to denote the Ctrl key, the letter S to denote the Shift key , and the letter M to denote the Meta key (commonly mapped to the Alt key on modern keyboards.)
A Control key (marked "Ctrl") on a Windows keyboard next to one style of a Windows key, followed in turn by an Alt key The rarely used ISO keyboard symbol for "Control". In computing, a Control keyCtrl is a modifier key which, when pressed in conjunction with another key, performs a special operation (for example, Ctrl+C).
David J. Bradley (born 4 January 1949) is one of the twelve engineers who worked on the original IBM PC, developing the computer's ROM BIOS code. Bradley is credited for implementing the "Control-Alt-Delete" (Ctrl-Alt-Del) key combination that was used to reboot the computer.