Enumerations for _Force_constant.Term (An open enumeration)
`13C shift term` | enumeration_text
`1H shift term` | enumeration_text
`1J coupling term` | enumeration_text
`2H isotope shift term` | enumeration_text
`3J coupling term` | enumeration_text
`covalent geometry angles term` | enumeration_text
`covalent geometry bond term` | enumeration_text
`covalent geometry impropers term` | enumeration_text
`CSA term` | enumeration_text
`dipolar couplings term` | enumeration_text
`distance term` | enumeration_text
`non-bonded radius of gyration interaction term` | enumeration_text
`non-bonded van der Waals interaction term` | enumeration_text
`Pseudocontact shift term` | enumeration_text
`T1 term` | enumeration_text
`T2 term` | enumeration_text
`torsion angle term` | enumeration_text