LAS\SPECTRUM [Yoff] [/INDEX] [/OBS] /OBS Plots the spectrum in the R buffer in the units and scales defined by SET UNIT and SET MODE. Yoff (default 0) is a constant Y-offset added to the plotted values (useful to compare two spectra). /INDEX Plots the 2D array from the last LOAD command. Without option, the behavior depends on SET ACTION (see PLOT). Default is OBS.