Zoom-in on the O VII emission band of the fluxed 2007#4 RGS spectrum of ESO 141-G55 fitted with a baseline absorbed power-law continuum. Similar to the 2022 RGS spectrum (Fig. 3 bottom panel) the broad component at 21.6 Å corresponds to the resonance line and the narrow component at 22.1 Å corresponds to the forbidden line. The absorption line at about 22.6 Å is due to O I from our Galaxy.