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.
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.
In some apps, you can undo and redo multiple commands. You can then press Shift-Command-Z to Redo, reversing the undo command.