6CYANA: write ang - CYANA command

Parameters: file=<filename>.ang            (required)
            fixed
            all
            append

Writes an angle file. Optionally, the output may be appended to an
existing file.  By default, the values of all rotatable dihedral
angles of the current structure conformation are written. The values
of the fixed dihedral angles (e.g. peptide bond angles) may be written,
too. Optionally, the angles of all selected structures may be written.
