The Mac Finder – abbreviations appear in all applications, not just Excel For example, the Command key is abbreviated as ⌘, the Control key with ⌃, and the option key as ⌥. These symbols have a long history on the Mac, and you'll find them in menus everywhere. One of more confusing aspects of keyboard shortcuts on the Mac are the symbols you'll see for certain keys.
Also see: Excel shortcuts on the Mac // 3 minute video 1.
