If I were responsible for delivering better documentation on error messages to users, my first step would be to make sure I *had* better documentation. Or, at least, that someone skilled in that art seemed likely to provide good documentation for all the possible error messages in the not-too-distant future.
On the technical side, I would make this a part of the session manager, not a part of the core language. For example, I would probably want to provide tooltips when the user put their mouse over an error line (or anything that looked like an error line). If the documentation were sufficient, I would also make context sensitive help work (control-F1), in J. FYI, -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
