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The function lock is actually "smart" even though they don't document it properly, it is actually a toggle and hotkey in one.

Whenever you hold the function key and hit another key while holding function, then release function it will stay in the mode you started in.

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I discovered the 'toggle' property recently and that's a real improvement to it, which is why I find it less problematic than every other implementation of Fn keys. Still would rather have a full set of keys, though.

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