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I was looking through the System Preferences for Mission Control in OS X Lion (10.7). One of the options had F13 in it but I couldn't find it anywhere.

Where is it?

4 Answers 4

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MacBook's don't have the extended keyboard which contains the additional 7 function keys (F13-F19). They're only on Apple's full size ( with numeric keys) keyboard as presented on this photo:

Apple keyboard photo

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Apple laptops don't have function keys higher than F12.

Certain Apple keyboards do, however.

When using an external IBM/PC keyboard, PrtScn/SysRq, ScrLk and Pause Break should map to F13-F15.

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You can use Karabiner (formerly KeyRemap4MacBook) to remap most keys on your keyboard. Particularly I used the option which maps the Eject button to F13 and Fn+Eject to Eject.

Important note:

consider using a different key than Eject; since it sends KeyDown and KeyUp events at the same time the system will not notice you trying to hold it. Also, it does not send any event until a small delay time has passed, during which you must keep it pressed. This can be very annoying if you are a fast-typing maniac and wish to be able to hit it very quickly. However, delay time is smaller than 0.1 seconds on my keyboard, so you will hardly find it an issue

Another useful tip

It is also useful if you liked old MacBook Pro keyboards which made a distinction between Return and Enter keys (very useful with Wolfram Mathematica for example) to remap the right option key to Enter. It has loads of other options, you will surely find it suitable for your needs.

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Use these 3 keys to send an F13: shift fn F1 I used this to send an F13 key to my windows application using Remote Desktop.

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  • 1
    This doesn't work for me. :(
    – Jo Smo
    Commented Sep 9, 2015 at 8:59
  • 1
    The reason it works in Remote Desktop is because it just passes the keyboard commands to the PC in two steps: First the Mac unwraps fn + F1 to be just F1 (rather than brightness) and Windows unwraps Shift + F1 to be F13. Commented Dec 12, 2017 at 0:03
  • This worked for me! Thanks a ton :D
    – JRDNXr
    Commented Sep 17, 2021 at 15:53

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