From day one, some things were deliberately not described in the official pipeline books from Glendale lab.
A user rebellion caused the Author's edition (latest is SL26-0018-06) to be published about twenty years ago, but it fell out of z/VM pubs with version 6. On 02/26/2016 05:10 PM, Jack Woehr wrote:
I will check PIPE AHELP for confirmation that IBM's pdf docs are out of date :)
