/FROMCODE=fromcodeset
     A required qualifier that specifies the codeset of the
     characters in the input file (infile).
   /TOCODE=tocodeset
     A required qualifier that specifies the codeset of the
     characters in the output file (outfile).
     Public conversion table files are in the directory defined by
     the logical name SYS$I18N_ICONV.  Put new conversion table files
     in the same directory if you want to make them available
     system-wide.