de facto
Sorry if I'm being a bore but consider this:
I got 100% in DC electrics in the UK. Question: Can you hold in a trip free circuit breaker? Ah, well, yes I could but er might not be a good idea though. is it yes, no or just downright ambiguous? The answer was no by the way, its things like this that make the European writtens harder, does it make you better? I think not.