SUBROUTINE WRITEF@(DATA,HANDLE, NBYTES, ERROR_CODE)
CHARACTER (LEN=*) DATA
INTEGER (KIND=2) HANDLE, ERROR_CODE
INTEGER (KIND=3) NBYTES
Writes NBYTES of binary data DATA to the file with the given handle. ERROR_CODE
is returned as zero for success or a system error code on failure. No data
compression on insertion of control characters is performed.
If the input value of NBYTES is supplied as a constant, it is usually necessary
to force its length to 4 bytes (append L to the decimal value).