Rebind Fn
Fn key can be rebound to Caps Lock using the following method:
Enter mode to choose new Fn
Press and hold the Fn + Left-Alt keys for 3 seconds, then release.
This will always be the physical Fn key and the physical key left of the
space bar
Choose new Fn
Press the key to you want to function as the Fn key.
The Fn key will now function as a OS key, unless rebound.
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