Input Below follows a description of the input to MBPT2 . The keywords are always significant to four characters, but in order to make the input more transparent, it is recommended to use the full keywords. No compulsonary keywords are required for MBPT2 . All lines following this line are regarded as title lines until the next keyword is encountered. A maximum of ten lines is allowed.
PRINt Specifies the general print level of the calculation.
An integer has to be supplied as argument. The counting of the orbitals follows the increasing orbital energy within each irrep, with those orbitals beeing frozen first that correspond to lowest orbital energies. DELEted the present option. The counting of the orbitals follows the decreasing orbital energy within each irrep, with those orbitals beeing deleted first that correspond to highest orbital energies. Note that the orbital reference numbers obey the original ordering and also include those orbitals which may have been frozen already by the FROZen option.