a) | For generating representations of CASSCF wavefunctions, the program
is invoked by the command CASVB.
For variational optimization of wavefunctions it is normally invoked
inside MULTI by the sub-command VB (see 19.10). |

b) | Definition of the CASSCF wavefunction (not generally required). |

c) | Definition of the valence bond wavefunction. |

d) | Recovery and/or storage of orbitals and vectors. |

e) | Manual input of starting guess (optional). |

g) | Optimization control. |

f) | Definition of molecular symmetry and possible constraints on the VB wavefunction. |

h) | Wavefunction analysis. |

i) | Further general options. |

molpro@molpro.net 2019-09-18