apall - Extract 1D spectra (all parameters in one task)
      apdefault - Set the default aperture parameters and apidtable
         apedit - Edit apertures interactively
	 apfind - Automatically find spectra and define apertures
	  apfit - Fit 2D spectra and output the fit, difference, or ratio
      apflatten - Remove overall spectral and profile shapes from flat fields
         apmask - Create and IRAF pixel list mask of the apertures
    apnormalize - Normalize 2D apertures by 1D functions
     aprecenter - Recenter apertures
       apresize - Resize apertures
      apscatter - Fit and subtract scattered light
          apsum - Extract 1D spectra
	aptrace - Trace positions of spectra

          bplot - Batch plots of spectra
      calibrate - Apply extinction and flux calibrations to spectra
      continuum - Fit the continuum in spectra
       deredden - Apply interstellar extinction corrections
        dispcor - Dispersion correct spectra
	 dopcor - Doppler correct spectra
     ecidentify - Identify features in spectrum for dispersion solution
   ecreidentify - Automatically identify features in spectra
     refspectra - Assign wavelength reference spectra to other spectra
     sapertures - Set or change aperture header information
	 sarith - Spectrum arithmetic
       scombine - Combine spectra
          scopy - Select and copy apertures in different spectral formats
       sensfunc - Create sensitivity function
     setairmass - Compute effective airmass and middle UT for an exposure
          setjd - Compute and set Julian dates in images
	  sflip - Flip data and/or dispersion coordinates in spectra
          slist - List spectrum header parameters
       specplot - Stack and plot multiple spectra
      specshift - Shift spectral dispersion coordinate systems
          splot - Preliminary spectral plot/analysis
       standard - Identify standard stars to be used in sensitivity calc

       doecslit - Process Echelle slit spectra
	  dofoe - Process Fiber Optic Echelle (FOE) spectra
	  demos - Demonstrations and tests