On Fri, 30 Aug 2002 06:13:03 -0400 John R. Wolff correctly states: > The other useful feature of UDC's compared to command files > is that they are evaluated priority wise even before MPE > commands. This allows a UDC to override and redefine or > pre-process an MPE command. John, Thank you for emphasizing this point I am afraid I made all too succinctly when I said that a command file could replace a UDC provided the UDC, "is not replacing a native CI command." It is such an important point that repetition is never amiss. At this point in MPE's evolution there are now only two good reasons to use a UDCs: o To withhold or modify a native CI command, or o To act at logon (i.e., OPTION LOGON) Everything else can and SHOULD be done with command files! If for no other reason than they are much less bother to maintain. There are other significant benefits -- however saving time should be good enough justification. Take care, frank ===================================================== Frank Alden Smith HP MPE/iX Certified Professional Alden Research, Inc. Instructor -- Consultant 3617 Ligon Road Ellicott City MD 21042 Phone: (410) 750-2101 "All knowing is doing" -- Humberto Maturana (biologist and teacher) ===================================================== * To join/leave the list, search archives, change list settings, * * etc., please visit http://raven.utc.edu/archives/hp3000-l.html *