How do I use the Fn key/F Lock key/Alternate command …
You can press and hold Fn while pressing keyboard letters M, J, K, L, U, I, O, P, /, ;, and 0 to match the physical layout of a numeric keypad. Use the F Lock key. If your keyboard has an F Lock key, press it to toggle between the standard commands and alternate commands. When the F Lock light is Off, alternate functions work (Help, Undo, and so on).
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