Damn i wonder why F13 was so important in keyboard.

Old mac keyboards have up to f15. The HID standard has key codes for up to f24 (which I believe was a thing on very old systems). The more you know :)

I once had an old AS/400 keyboard that had two rows of function keys and went up to F24.

because it's prime
primes are cool

Shift + F1

Thats why Windows still has backwards-compatibility support all the way up to f24...

You can easily see people using that in AutoHotKey scripts

@filthyranter didn't knew!

Is it real?

@CozyPlanes ye

It goes back to CLI driven applications /terminals

Instead of printing out multiple menu labels, which would consume a Lot of horizontal space, the pressing of FN plus X is used for menu access. After pressing F plus X the corresponding menu label was printed....

These programs still exist today - dating sometimes back to DOS. So think back to good old 16 color displays and 800 x 600... Or smaller.