Web browsers have it, now even Mac OS X finder has it, it's time that filemaker gets tabbed windows.
No, that's not the same as layout tabs. It will help a lot for productivité for the users (or the in house dev that also work with their database).
For instance, I doing data inputs that involves 6 tables, it's a pain to fiddling with them around.
With tabbed window, I could group the window of the same kind together, i would a be a lot easier.
It would be a great boost for productivity of users
Of course that needs to be fully scriptable (as any new feature should).
P.S : it may also probably simplify the Microsoft Windows mess.