> if I write them this way:
> 
> let fso = flush stdout
> let name s = printf "Name %s\n" s; fso
> let color c = printf "Colour %s\n" c; fso

I think what you mean to write here is:

let fso () = flush stdout
let name s = printf "Name %s\n" s; fso ()
let color c = printf "Colour %s\n" c; fso ()

In the code you wrote above, "fso" gets bound to () (and not to a function)
after flushing stdout once. So the name and color functions you wrote are
doing prints, and returning units, rather than invoking the flush as you
thought. Thus, this is why the output becomes bursty (you're not actually
flushing).

Jon
..........
Jonathan Moore                              http://www.cis.upenn.edu/~jonm
University of Pennsylvania                          jonm@dsl.cis.upenn.edu
'Frater qui adiuvatur a fratre quasi civitas firma.' (Brother helped by
brother is a fortress).
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