Magda walks us through the Ctrl+D shortcut in a series of applications:
I found the CTRL+D shortcut key as an interesting feature in many programs. It can duplicate without using copy and paste. But not always. It is also D like DELETE, DISPLAY, or HIGHLIGHT…
It’s not quite as ubiquitous as Ctrl+C for copy or Ctrl+V for paste…but then again, Ctrl+C also means cancel in shells.