Table-of-contents editing

[Daniel L. Weinreb <DLW at MIT-AI>]

Yes, Well...

There exists an editor referred to as NLS, usually run at SRI, that
thinks of the thing you are editing as a hierarchy.  It has elaborate
commands to do what you want.  Several years ago there was rather a lot
of interest among some of us, notably RMS but me and other too, in
implementing this in various MIT editors.  Part of the EINE => ZWEI
conversion was a basic data-structure change to help make this
possible.  But it is still very hard to design it all in a coherent manner,
and I never put the time into it that it needs.  I don't know if Mike
has given it any thought.  That is the capsule summary of the relevant history.