Guilherme Polo added the comment:
It is possible to create a tabbed window without ttk.Notebook. This is already
being done in the configuration dialog. The real issue goes much beyond
ttk.Notebook, check the patch "tabs_ttk_and_co.diff" at
http://code.google.com/p/python-ttk/downloads/list f
New submission from Terry J. Reedy :
The addition of tabbed windows to web browsers was a great advance that is now
standard. For Windows, it eliminated the crowding of the taskbar. I suspect it
made switching easier on all systems.
The addition of the same to IDLE would have similar benefits.
