It's just a symbol, like the square loop symbol. I'm sure you can find a use for the key. And I'm sure you can understand historical reasons that the key is the

It's just a symbol, like the square loop symbol. I'm sure you can find a use for the key. And I'm sure you can understand historical reasons that the key is there. I imagine if you dig into the reasons behind some other keys you'll find that a single company was behind some of them. And what would be the difference other than the symbol used?