On English layout, < and , are on the same key, and the same goes for > and .. I don't know how practical it is to try and take into account all possible keyboard layouts, so for special characters, the Find Key option may indeed be your best bet. There's probably even some obscure keys in English layouts that I've missed, especially ones that aren't included on all keyboards. But at least, they can be used; they just won't show the correct name in the config menu.