Impact of nebular line emission on UV-optical SED of a star-forming galaxy (model GIZMODISK). The blue line shows the default model with no nebular line emission, the orange line shows the UV-optical SED (including nebular lines) for a model in which the spectrum from photoionization regions around young stars are calculated with on the fly CLOUDY models, while the maroon line shows the same, but with the nebular line emission computed via the Byler et al. (2017) lookup tables. The flux densities (ordinate) are offset by an arbitrary multiplicative to aid in clarity.