Should out/ref parameters require the caller to specify out/ref like in C#?

[Stanislav Blinov via Digitalmars-d]

On Tuesday, 30 May 2017 at 16:19:26 UTC, Andrei Alexandrescu 
wrote:

>>>>> Apparently, it is not. Do you have a reference to Walter's 
>>>>> change regarding `in` becoming just `const`? ...
>>>> Unfortunately, `in` was never implemented as `scope const`.
>>>
>>> Why would it need to be `const`? Thanks! -- Andrei
>> 
>> What do you mean?
>
> I think `scope` would be enough. People should still be able to 
> modify the value. -- Andrei

I'm puzzled. I was talking about 
https://dlang.org/spec/function.html#parameters : `in` - `const 
scope`. Jonathan mentioned that Walter effectively reverted it to 
`const`. Petar provided links to that effect. Now you're saying 
it should be simply `scope`? %-O