SHOW SPECTRA Clean|Dirty|Sky|ImageVar Display individual spectra in a Map-like display (one per box, placed at their respective positions) from a 3-D SIC variable, assumed to be in the LMV order. Note: the second argument may be omitted to re-display the same dataset with different control parameters. SHOW SPECTRA is however not fully protected against changes in the data set between two invocations, so this should only be used for consecutive commands.