Dear Jean-Pierre,
Multiwfn doesn't support plotting different spectrum curves in different styles (solid, dash, dot, etc.) to distinguish them. You need to export the curve data and plot via e.g. Origin. Alternatively, manually using e.g. Powerpoint to indicate different curves by arrows and labels.
Best,
Tian
Dear Professor Tian Lu,
I would like to plot three curves representing the UV-vis spectrum of a molecule for different conformations. Please, what should I do to add different marks on each curve to distinguish them when I print the result without colour?
Thank you in advance for your answers.
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Best regards
Jean-Pierre