Hi folks:

For any Xanadu fans out there, I just stumbled across this:

http://www.night.dircon.co.uk/abora/index.html

It is a preliminary implimentation of the Udanax-Gold specification in
Dolphin Smalltalk (wonder how easy it would be to port to Squeak?).

The fascinating part is the example--you can open an Ent Inspector
on an example document "tree".  It's nice to see some of this theory
I've been reading about in actual practice!

(sadly it is Windows-only :p, but neat nonetheless!)