Pencil-beam spectra towards NML Cyg, extracted towards the stellar position (left) and towards the peak positions of components A (middle) and B (right). The spectra have been normalised to their peak and a vertical offset has been added. The transitions are labelled in each panel. Note: the spectrum of PN 5 - 4 towards component B has been scaled for the sake of visualisation. Shaded regions indicate velocity ranges of interest with respect to absorption and emission features, with the relevant boundaries indicated in the top of each panel.