Thanks, Brian, some of that was a bit mind blowing. But thanks for
the info. I had a quick look at the showdependencies script but
unfortunately it relies on the scripts being documented with requires
and that is not the case with my system. It's an older system with no-
one who knows the system to explain it's structure. I was thinking
there ought to be something within ksh, as you described, which could
help. I might check that out. I have taken a quick and dirty
approach for now where I did a grep for each line mentioning the
basename of the file within any other file thus generating a list of
files and names which that file refers to. I'm now trying to generate
a dependency diagram from that list.

TD