formula_sum - parse and print the chemical formula sum as described in the CIF _chemical_formula_sum data

       Parse and print the chemical formula sum as described in the CIF _chemical_formula_sum data item.

       formula_sum - parse and print the chemical formula sum as described in the CIF _chemical_formula_sum data
       item.

       --help, --usage
                         Output a short usage message (this message) and exit.

       --version
                         Output version information and exit.

       Report formula_sum bugs using e-mail: cod-bugs@ibt.ltFORMULA_SUM(1)

       formula_sum sum.lst

       formula_sum sum1.lst sum*.lst