DIP53 and DIP49 (ver2) - New definitions for qualified constructors and postblits

[Maxim Fomin]

On Wednesday, 18 December 2013 at 15:29:44 UTC, bearophile wrote:
> Kenji Hara:
>
>> I think adding new keyword/attribute just for readability is 
>> overkill.
>
> Making the code more explicit and easy to understand, using the 
> right words, is rather important. So I like @unique, that can 
> probably be re-uses for another purpose.
>
> What's worse than having many keywords is having them with 
> multiple meanings. Otherwise are you willing to explain again 
> and again to future people in D.learn that specific "const" 
> doesn't really mean const, it really means... and so on :-)
>
> Bye,
> bearophile

Which additional meaning will const qualifier have?