Doug Werth writes:

> These VTERM devices are used for "Reverse Virtual Terminals" and are set up
> by MPE on your behalf. You don't actually configure them. According to the
> NS 3000/iX Network Services manual the definition of Reverse VT is as such:

[...]

> I have never used this feature but it apparently is closely related to
> Remote File Access but does not require logging on the other machine.
> Perhaps someone who has actually used this service can shed more light on
> its practical use.

Well, Wirt suggested this too, and I had looked at the ;VTERM option of
:FILE, but I couldn't see how you would need LDEVs for the ;VTERM function
(not that I really know what it is of course).

The "reverse VT" option has been there for a long time, but I'm not sure
I've ever heard of anyone using it, and I've never quite figured out what it
does either.

The :FILE parameter documentation for ;VTERM implies that it is RFA for
terminal devices instead of files.

With RFA you can issue a file equation pointing to a file on a system that
you've opened a :DSLINE to.  It sounds like ;VTERM would allow you to issue
a file equation that points to a terminal device on the remote system.  But
exactly why this would require some random "virtual" LDEVs I'm not quite
sure of, but I suppose they could serve as proxy devices for the remote
terminal devices.

Can anyone give an example of actually using the ;VTERM option?

In any competition for "most obscure and least used MPE feature" this has to
be a finalist.

G.