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        LAS\SPECTRUM [ArrayName] [Yoff] [/INDEX] [/OBS] [/PEN Ipen]

        Plot the spectrum in the R buffer in the units and scales defined by
        SET  UNIT  and  SET  MODE. No argument or argument "Y" will plot the
        spectrum Y intensities of the R buffer (RY), but an associated array
        can be plotted instead given its name.

        Yoff  (default 0) is a constant Y-offset added to the plotted values
        (useful to compare two spectra).

        The option /PEN allows to use a i-th pen instead of the current one,
        without modifying it in return.

        Plots the 2D array from the last LOAD command.

    Without  option,  the behavior depends on SET ACTION (see PLOT). Default
    is OBS.

Gildas manager 2020-10-13