The card names an action you do in every text editor — copy, undo, jump one word left. Answer with the key combination that does it: hold Ctrl (on a Mac ⌘ or ⌥), add Shift if needed, and press the key. Nothing on the page is really copied or saved — the dojo keeps the keys. A wrong combination lights up the right one on the keyboard below: press it, and the action comes back a little later until you know it. A quick answer earns a bonus. Belts: white — copy, paste, undo; yellow — moving through text and deleting words; black — selecting. Sparring: 90 seconds, actions from every belt, five seconds for each. The switch at the top chooses Windows / Linux or macOS shortcuts.