> ... but don't underreach.  Such a mapping facility should apply not
> only to SYSPRINT/SYSOUT, but to any DD-Name for any device type.

An ambitious programmer could always implement a RYO method. For example,
implement SVC screening, intercepting the OPEN SVC to switch the DDNAME
field in the DCB/ACB, possibly also invoking dynamic allocation if
necessary. IIRC, SVC screening runs as a subsystem, and could be invoked
automatically without application code changes.

With a little imagination and a stick of chewing gum, almost anything is
possible.

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