I really don't know what return from the main top-level code of a module does.

I tried changing the 1 to

return 1;  # script loaded OK.
[download]

on the PM I'm working on, and nothing changed. So I suppose it's just fine. I'd do without the extra parens, though: return is not a function, and I'm not expecting it to be "called" in list context.

—John