This helps you to avoid using them unintentionally. You might need to press and hold some of these shortcuts for slightly longer than other shortcuts. Command-Comma (,): Open preferences for the front app.Shift-Command-N: Create a new folder in the Finder.Or use Shift-Command-3 or Shift-Command-4 for screenshots. Shift-Command-5: In macOS Mojave or later, take a screenshot or make a screen recording.Command-Tab: Switch to the next most recently used app among your open apps.Space bar: Use Quick Look to preview the selected item.Control-Command-F: Use the app in full screen, if supported by the app.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. Command–Space bar: Show or hide the Spotlight search field.

To close all windows of the app, press Option-Command-W. Command-O: Open the selected item, or open a dialog to select a file to open.To minimize all windows of the front app, press Option-Command-M. Command-M: Minimize the front window to the Dock.To view the front app but hide all other apps, press Option-Command-H. Command-H: Hide the windows of the front app.To find the previous occurrence, press Shift-Command-G. Command-G: Find Again: Find the next occurrence of the item previously found.Command-F: Find items in a document or open a Find window.In some apps, you can undo and redo multiple commands. You can then press Shift-Command-Z to Redo, reversing the undo command. Command-V: Paste the contents of the Clipboard into the current document or app.

Command-C: Copy the selected item to the Clipboard.

Command-X: Cut the selected item and copy it to the Clipboard.

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