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One other thing I forgot to mention and which I think is a flaw: in subroutine CHGREC you keep the record locked, while the user is looking at the screen. Or is on the phone with a friend, or is out for lunch, or has gone home without closing his session. In our code that is a definite nono.
I had it once with a customer of ours
[…]
We turned to his screen, pressed Enter and everyone could continue.
So, locking a record in job in status DSPW: don’t do it.
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