WRT@CORNELLC.BITNET (Bill Turner, Cornell University Library) (02/28/90)
I can't be of help on your catalog card question, but I can tell you that I have also been confused by the "OPR" terminology. We programmers consider it an Order record; that's what it is called in the Programmer's Programmer's Reference Manual. What you librarians use it for doesn't matter to us. :-)