Daniel, get off your high horse and don't patronise me. This forum is not just for railway staff and I have as much of a valid opinion as anyone else on here. if you don't like it, you don't have to read it.
And I though we were talking about the various letters that label the levers and buttons accessible from the platform? I'd have thought you'd have to be on the lineside to be able to get at third rail stuff.
As well, (i've just thought, since I remembered that things do indeed have external handbrake wheels and such,) a vehicle running away from a platform from having a lever messed with is unlikely, since track through platforms tends to be level.
Anyway, I'm not even trying to argue that its not unsafe to meddle with things on the undreframes of trains. All I said was it doesn't need to be as top secret on here as some people think it should be. As I've already said, people will mess with things if they need to, and whats posted on here or not will not change that in the slightest.