Michael,
  Jeff Vance has made available on jazz an excellent :STREAM UDC.  It will, I
think, do what you want.  There are two caveats.  First, your programs may
be calling STREAM with the COMMAND intrinsic instead of the HPCICOMMAND
instrinsic and be impervious to UDCs.  Second, if you intend to use the STREAM
instrinsic from within Qedit or some other such environment, you may have
trouble as Qedit (and perhaps other things) doesn't handle recursion in UDCs,
which is what Jeff's UDC uses.  If you run up against that, holler, and I'll
send you an "unwrapped" version which works fine in Qedit.

Ted
--
Ted Ashton ([log in to unmask]), Info Sys, Southern Adventist University
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Perhaps the most surprising thing about mathematics is that it is so
surprising. The rules which we make up at the beginning seem ordinary and
inevitable, but it is impossible to foresee their consequences. These have
only been found out by long study, extending over many centuries. Much of
our knowledge is due to a comparatively few great mathematicians such as
Newton, Euler, Gauss, or Riemann; few careers can have been more satisfying
than theirs. They have contributed something to human thought even more
lasting than great literature, since it is independent of language.
                         -- Titchmarsh, E. C.
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         Deep thoughts to be found at http://www.southern.edu/~ashted