Finding which hotkeys you modified?

OK, it seems like a weird thing to ask but if I were to create a tutorial and I was going to show the hotkeys for whatever tool I was using BUT I customised my hotkeys a long time ago then how would I know which hotkeys I had modified?
I am using Blender 2.79 and in the preferences>input tab is there a way of filtering the hotkeys so that they only show the modified ones?

Thanks in advance.