How to figure out what a keyboard shortcut is set to For example, I would like to know what Shift-F1 does. 

I've looked in the keyboard shortcuts section and couldn't find anything. 

Is there a way I can look it up? Either on my Mac, or some reference table somewhere?

I notice in the terminal, it just makes a beep sound, and in safari it does nothing at all.

the reason for it is I want to use this shortcut when I ssh into a linux machine to control byobu.
Is this app specific or in finder?
If its finder, I dont see a shift+f1 shortcut, only control+f1