X-Ray Spectroscopy in the Microcalorimeter Era 4: Optical Depth Effects on the Soft X-Rays Studied with Cloudy

In this paper, we discuss atomic processes modifying the soft X-ray spectra in from optical depth effects like photoelectric absorption and electron scattering suppressing lines. We also show enhancement line intensities a photoionized environment via continuum pumping. quantify suppression/enhancement by introducing "line modification factor ($f_{\rm mod}$)." If 0 $\leq$ $f_{\rm mod}$ 1, is suppressed, which could be case both collisionally-ionized systems. $\geq$ enhanced, occurs Hybrid astrophysical sources are very common, where partly collisionally-ionized. Such system V1223 Sgr, an intermediate polar binary. application of our theory fitting first-order Chandra MEG spectrum Sgr with combination \textsc{Cloudy}-simulated additive cooling-flow models. particular, account for excess flux O~VII, O~VIII, Ne~IX, Ne~X, Mg~XI lines found recent study, not explained absorbed model.