Bill, The 'compatibility problem' you mention is not obvious to me. Currently--I have tested all of the permutations---either the IN bit is set or the OUT bit is set. Both are never set.
My view is, yes, that both the IN bit and the OUT bit should be set in the ACB at open time when the file is opened for update and, of course, only in this case. Currently, usage for update is indistinguishable from [admittedly already impure] usage for output. I now suspect that if this were done the SMF flag-bytes problem would be fixed too as a byproduct. John Gilmore, Ashland, MA 01721 - USA ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
