equation_of_state (see EOS reference) pressure temperature pressure_weight temperature_weight estimated_density estimated_specific_internal_energy density_scale specific_internal_energy_scale verbose_flag (0/1 for diagnostic output off/on) optimisation_scheme (see WXC++ documentation)
The weights are used in calculating the deviation from the desired state. The scales are used when calculating numerical derivatives with respect to the primitive variables, to choose a reasonable perturbation.