Upper panel: X-ray spectra of 4U 1630-472 obtained with the XIS023 showing a prominent bump similar to multi-temperature disk emission. Lower panel: focus on the iron line region from 5–9 keV, where absorption features are clearly seen. Colors mean different epochs of observations starting from black – epoch 1, up to magenta – epoch 6. The data are very similar to those presented in Kubota et al. (2007) in Figs. 2 and 5.