The directory contains input files for a pseudo-NLTE spectrum,
where the input model is a Kurucz model with Teff=5500 K, log g = 4.5,
but the NLTE level populations of H, Mg, and Ca, expressed through
the absolute b-factors, are taken from the previously computed model
g55nres (one of the test cases for TLUSTY), which took these
three species in NLTE, while the rest in LTE. Details are explained 
in the Manual, Sec.3.8, item (III).

Notice that this option is switched on by the keyword parameter IBFAC=2,
plus having an additional input file called "bfactors", which is
copied from the file g55nres.22 generated by TLUSTY.