I don't really know, but someone (I can't remember who) mentioned to me something about this fairly recently.
By the way, IHARB is mentioned. It's in maclib. But there's also IKJRB. That's in modgen. Some fields are in one, some in the other. It is possible that the IKJxxx mappings were created by TSO and then when the operating system decided it needed them it took them over. It's possible that they were related initially only to TSO usage so were given a TSO prefix. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
