Thanks, I hadn't seen that before. My go-to point for all this stuff has always been the papers by Ertl and others http://www.complang.tuwien.ac.at/forth/thread

Thanks, I hadn't seen that before. My go-to point for all this stuff has always been the papers by Ertl and others http://www.complang.tuwien.ac.at/forth/threaded-code.html http://www.complang.tuwien.ac.at/forth/threaded-code.html