When using a pre-built system image such as the "VM/370 sixpack" or "MVS Tur(n)key" under Hercules, when a user connects a 3270 terminal, a login screen comes up with a banned identifying the install (sixpack with one closer to the original VM/370 one, and Turnkey with a full custom one). How does one customize those screens? Is there a simple way to restore them to the original IBM provided one?
It is now 33 years since I last touched anything remotely connected (no pun intended) to VM/370, VM/SP, or MVS, and the little grey cells are now full of C#, Entity Framework, and SQL Server rather than BAL, CICS, and DL/I. However I did find this page which describes in detail the process for modifying the MVS VTAM 'map' for the signon screen: