read file, convert to Fortran

write to a file

SBMLWrite[inputfile-> "repressilator.xml", outputfile-> "rep.for", format-> "FORTRAN"]

rep.for

same thing, but write output to the screen

SBMLWrite[inputfile-> "repressilator.xml", format-> "FORTRAN"]

C SBML Model Name:  Repressilator Model\nC\nC Generated by MathSBML 2.2.1-beta-9 (25 ... determinate\n      return\n      end\n

Created by Mathematica  (February 27, 2004)