If so, you probably never met the Command key - that large button with a pretzel-shaped logo next to your space bar - until well into your computer-using life. If you’re over the age of about 25, there’s a good chance you didn’t learn how to use a computer on a Mac. This week: the mysterious symbol on Apple’s Command Key. Welcome to Further Details, a series dedicated to ubiquitous but overlooked elements hidden on your favorite products.