image,f,a,,,,input image
pass_dir,i,a,,1,2,pass direction to plot
normalize,b,h,yes,,,normalize the spectra?
refpos,i,h,1,1,16,reference waveplate position
wave,f,h,,,,wavelength image
stats,b,h,yes,,,compute statistics?
sample,s,h,"*",,,statistics sample region
wx1,r,h,0,,,left  world x-coord if not autoscaling
wx2,r,h,0,,,right world x-coord if not autoscaling
wy1,r,h,0,,,lower world y-coord if not autoscaling
wy2,r,h,0,,,upper world y-coord if not autoscaling
device,s,h,"stdgraph",,,output device
Version,s,h,"02Dec93",,,Date of installation