The Command steals the limelight on your Mac's keyboard, but it’s the Option key that is the real hero. Readers like you help support MUO. When you make a purchase using links on our site, we may earn an affiliate commission. Read More. The Command (cmd) key steals the limelight on your Mac's keyboard, but it’s the Option (or alt) key that is the real hero. It works behind the scenes, providing yo