[nevadapatriot]

>“IBM MVS”
>
>I remember that .... from the early 1980s.

Don’t forget CICS

[Uncle Miltie]

CICS, IMS, VSAM, JCL, COBOL,

You betcha!

[IronJack]

Now it's zOS.

And I worked with a guy who wrote the first edition of CICS at Houston Power & Light.