fortran output from loop

Hi, I'm trying to get fortran output to a file and having difficulty.

This is the relevant code (I think), from a file which I )read into an 
axiom session.

)set output fortran on
)set output fortran H4.output

-- body of program here

-- output step:

for f in lB1.num repeat
     for pl in rest(reverse(D)) repeat
         output( [eval( f, lB1.den, pl )$P])



The output() statement prints what I want to the console, but not to my 
output file.  How can I do this?  Output from other parts of the program 
do appear in H4.output.

Another related question:
Does axiom have a function which allows one to write directly to a file? 
(something like the C function fprintf())

Thank you
Greg