At Northeastern University in Boston, we are developing Lisp-based software on a stock Symbolics 3600 running Genera 7.2, and on MacIvory machines running Genera 7.4. We are interested in using CLUE/CLX for interface development. Can you briefly indicate what software we'll need to make this go? Are CLUE/CLX compatible with X11 R.3? Thanks for your attention. Paul Steckler