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###

19.3.1 Defining the state symmetry

The number of electrons and the total symmetry of the wavefunction are specified on the WF
card:
`WF`,*elec,sym,spin*

where

*elec*
- is the number of electrons
*sym*
- is the number of the irreducible representation
*spin*
- defines the spin symmetry,
*spin* (singlet=0, doublet=1,
triplet=2, etc.)

Note that these values take sensible defaults if any or all are not specified
(see section 4.8).
The input directives `STATE`, `WEIGHT`, `LQUANT`, `SELECT`,
`PUNCSF` always refer to the state symmetry as defined on the previous
`WF` card. If such a directive is found before a `WF` card has been
given, an error occurs. If any of these cards and a `WF` card is given,
the variables `STATE`, `WEIGHT`, `LQUANT`, `SELECT` are *not* used,
and the number of state symmetries defaults to one, regardless of how many
symmetries are specified in variable `[MC]SYMMETRY`.

molpro@molpro.net 2017-12-11