In Blender, macOS still relies heavily on the Ctrl key for many operations, but you will use Option (⌥) instead of Alt, and Command (⌘) for standard system level commands like saving and undoing.
General & System
| Action | Shortcut |
| | |
| Search Menu | F3 (Quickly find any tool or operator) |
| Undo / Redo | ⌘ Z / ⌘ Shift Z |
| Save | ⌘ S |
| Preferences | ⌘ , (Command + Comma) |