I'm not sure who coded it into the vB Core, but there it was solved with phrases.
Specialy for some of my boards, it's a MUST.
In some boards, i have users, who can only reed cyrillic and some others only know the latin font.
With the QA System, they wouldn't be able to register!
When they change the board-language, they will be able to go to the registration page, they will be able to read the form BUT they woun't be able to read & answer the question
That's the same with the languages.
If you have a international support board (for example english, italian, german) and you have only english questions, some people wount be able to register...)