Re: Tabbed buffers

[Richard Stallman]

    Here's another approach.  Currently, frames can be iconified or
    normal/deiconified.  We could add a third state, "unselected tab",
    which also contains information about a "master" frame that is the
    selected tab to which the unselected tab is attached.  That way, a
    "selected" tab is a frame in its normal or iconified states, and an
    "unselected" tab is a frame in the "unselected tab" state.

I think the most natural thing is for tabs to exist just within a
frame, and for each tab to have a window configuration.  Thus,
switching to another tab would select its window configuraton.
This is natural and already implemented.