Observed spectrum of R Nor around the Li line doublet (black graph), together with a synthetic spectrum (grey graph). The synthetic spectrum is based on a COMARCS model atmosphere with T_eff = 3200 K, log g = 0.0, solar metallicity, and solar C/O ratio. A Li abundance of log ϵ(Li) =  + 4.6 was assumed in the spectral synthesis. The dotted vertical lines indicate the laboratory wavelengths of the Li line doublet. All other features in the plotted range are due to TiO.