>It's too complicated to explain >here, and you wouldn't understand anyway
And I'd add "and since it is not part of the programming interface we would not explain it within the documentation anyway because if we did we might well have to maintain that behavior in the future for compatibility". This is why most new references do not say "unpredictable" but instead (for a register) say something like "used as a work register". 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
