The Fn key has been a fixture on Apple keyboards for decades, but many Mac users lack a sense of its purpose. Adam Engst thought he was going to write a quick article listing hidden keyboard shortcuts that tap the Fn key but got dragged into documenting the history and capabilities of this unsung key.
Ah yes, that Fn key.
The key for Fn, the key chosen especially to activate Fn, Fn’s key. That key?
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I’m calling it the “effin’” key from now on