MDI and tabbed interfaces aren't mutually exclusive but if the master window does not embed resizable child windows (like a traditional MDI interface) then it's

MDI and tabbed interfaces aren't mutually exclusive but if the master window does not embed resizable child windows (like a traditional MDI interface) then it's not MDI regardless of tabs. I think VS used to be MDI tabbed. It definitely used to be MDI. But I have to admit it's been years since I've last used it. In fact thinking about it now, it's been even longer than I realised (I switched away from Windows development around the time of XP getting released so we're probaby talking close on 15 years. It's scary how fast time flies).