Be sure to consider the use of ACCESS='DIRECT' if you haven't already. It'll come in handy if you ever want to read/write only parts of a(m,n). On Tue, 2 Mar 2004 11:26:35 +0100, Joerg Stiller <[log in to unmask]> wrote: > Thank you Mike. I should have mentioned, of course, that I am > specifically > interested in the case of a single real (or double precision) array, say > a(m,n).