Luminosity parameters

PHOEBE keyword	Type	Short description
HLALC	adjustable	Passband luminosity of primary star
CLALC	adjustable	Passband luminosity of secondary star
EL3	adjustable	Third light
EL3_FLUX	boolean	Is the $3^\mathrm{rd}$ light in flux units
OPSF	adjustable	Opacity function
IPB_ON	boolean	Include proximity effects?
NOISE_ON	boolean	Add synthetic scatter to LCs
NOISE_TYPE	string	Synthetic scatter level weighting scheme
NOISE_VAL	real	Synthetic scatter $\sigma$
SEED_VAL	real	Synthetic scatter RNG seed
IFAT1_ON	boolean	Model atmosphere for primary star
IFAT2_ON	boolean	Model atmosphere for secondary star
MODELLGG_ON	boolean	Use gravity acceleration from the model
NREF_ON	boolean	Detailed reflection effect
NREF_VAL	integer	Number of reflections
ICOR1_ON	boolean	luminosities icor1 switch ???
ICOR2_ON	boolean	luminosities icor1 switch ???