SECTION./FLUX
CALIBRA/FLUX  in  out  [resp]
	Correct an image for the instrumental response function
SECTION./LONG
CALIBRATE/LONG  [tol]  [deg]  [mtd]  [guess]
	Wavelength calibration of 1D and long-slit spectra
SECTION./TWICE
CALIBRATE/TWICE  
	Performs the wavelength calibration on a selected set of lines.