from
The Free On-line Dictionary of Computing (8 July 2008)
OS/390
<operating system> An {IBM} {mainframe} {operating system},
featuring integrated {MVS}, {UNIX}, {LAN}, {distributed
computing} and {application enablement services} through its
base elements. These base services enable open, distributed
processing and offer a foundation for object-ready application
development. The OS/390 base includes a {Communication
Server} that includes {VTAM}, the {VTAM AnyNet} feature,
{TCP/IP} and {TIOC}. It provides {SNA} ({3270}), {APPC},
{High Performance Routing}, {ATM} support, {sockets} and
{RPC}.
OS/390 is basically rebranded, repackaged {MVS/OE}, {CMOS}
processors, {RAMAC} disk arrays and {open systems} extension
to networking in {VTAM}, the principle being that if you can't
compete, rebrand what you have and tell everyone it's
something new.
(http://204.146.133.206/os390/index.html).
(1999-01-20)