Re: window groups

[Richard M Stallman]

Could you describe the purpose of the window groups feature
in a few lines of English?  If the feature does not have
a simple conceptual description, it is not a good feature.

Using a number to designate each group is un-Lispy.

It seems unclean that the group disappears if you happen
to reduce it to just one window.

    - IDEs would typically specify one window group ("edit-area" in ECB,
       "editor" in Eclipse) for each frame.  Splitting any window of that
       group would be done by setting the GROUP argument for `split-window'
       to t.  Other applications would not interfere with the layout of that
       group since, by default, their GROUP argument would not be t.

I cannot follow why this does the right thing for them.
Can you explain?