XEDIT would be completely prohibited, in that there would be a set of files holding information about who is on what list. There could also be a "TEXT" format for lists, but that's another issue which can be gotten around rather easily; the main point is that you wouldn't be able to surreptiously modify a list without incurring serious troubles. In the longer range, I have plans for significant performance improvements in LISTSERV through the use of a faster (yet public) language. Actually I have several plans, which I need to investigate in deeper details to see how it can work out. I don't want to say any more until I know for sure that it will be feasible and I can estimate the time it would take to make the conversion. And of course, I also have an XA migration to finish, plus 3 software projects, etc. Eric