Generic: 
      gdisplay - Display (raw) GMOS images
      gprepare - Prepare raw GMOS data for reductions
         gbias - Process and combine GMOS bias images
          gbpm - Derive bad pixel mask for GMOS 
       gmosaic - Mosaic the 3 GMOS CCDs into one image 
        garith - Simple MEF arithmetic task
         ggain - Correct gain and read-noise for GMOS images (hidden task)

Imaging: 
        giflat - Derive flat field for GMOS images (IMAGING mode only)
      gireduce - Reduce images from GMOS (overscan, trim, bias, dark, flat) 

Spectroscopy: 
     gsappwave - Add approximate wavelength calibration to the headers of 
                   GMOS spectra 
   gscalibrate - Apply flux calibration and extinction correction to GMOS spectra
         gscut - Cut GMOS MOS spectra into 2D pieces
     gsextract - Extract GMOS MOS or longslit spectra to 1D
        gsflat - Derive flat field for GMOS spectra based on GCAL lamp exposures
      gsreduce - Reduce spectra from GMOS (overscan, trim, bias, dark, mosaic, 
                   flat, approximate wavelength calibration, cut MOS data) 
      gsskysub - Skysubtract GMOS spectra (longslit or MOS)
    gsstandard - Establish spectrophotometric calibration for GMOS spectra 
   gstransform - Rectify and/or wavelength calibrate GMOS spectra
  gswavelength - Establish wavelength calibration for GMOS spectra 
      mostools - Package for GMOS mask preparation

Cookbooks
      gmosinfo - Generic tasks and general information about GMOS
  gmosinfoimag - Reduction of imaging data from GMOS
  gmosinfospec - Reduction of longslit and MOS data from GMOS
  gmosexamples - Print reduction examples to the screen