I'm *guessing* that for each file, they simply FOPEN then FCLOSE with
the disposition parm's bits 11:2 = 10  (Return disk space beyond EOF but
don't change the FLIMIT).

Donna Garverick wrote:

> (yet another mpex question :-)
>
> hi again!
>
> at least for a change i'm not asking how to do something in
> mpex :-)
>
> if i say 'altfile <somefileset>;xltrim' -- what really
> happens?  is mpex working directly on each file or does it
> make a 'work' copy?  if it's making a copy, i'm guessing
> there's only one copy file in existence at a given
> moment?           - d
>
> --
> Donna Garverick     Sr. System Programmer
> 925-210-6631        [log in to unmask]
>
> Come, my friends, 'Tis not too late to seek a newer world.
> Tho' much is taken, much abides; and tho'
> We are not now that strength which in old days
> Moved earth and heaven, that which we are, we are.
> "Ulysses", A. Tennyson
>
>
>>>>MY opinions, not Longs Drug Stores'<<<
>>>>
>
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