Written by funflo512 the 21 Sep 08 at 09:59.
That system would allow you to put tabs of different program into the same windows.
For example : You open Firefox, and you drag'n'drop a Pidgin tab into the Firefox window, then a Konqueror tab into that same window, etc.
So, instead of forcing each program into it's own window(s), allow the option to put them in tabs inside generic main windows? Nice! +1
That's a task for the window-manager, I would think, and should be simple enough to implement.
I can already see one possible application: one might for instance save the configuration of a main window into, say, a desktop icon; and, when opened, it would load all programs previously in it automatically. Nice indeed
As I see it is impossible to implement this using GTK or altering the programs. The closes possible solution is the already mentioned tabs - like in Fluxbox. You can tab programs together, specify programs to get automatically tabbed together.