Control–Command–Space bar: Show the Character Viewer, from which you can choose emoji and other symbols.Learn how to change a conflicting keyboard shortcut.) (If you use multiple input sources to type in different languages, these shortcuts change input sources instead of showing Spotlight. To perform a Spotlight search from a Finder window, press Command–Option–Space bar.
To close all windows of the app, press Option-Command-W. To minimize all windows of the front app, press Option-Command-M. To view the front app but hide all other apps, press Option-Command-H. To find the previous occurrence, press Shift-Command-G. In some apps, you can undo and redo multiple commands. You can then press Shift-Command-Z to Redo, reversing the undo command.
