text: syncline                            :model file
  3                                   :#interfaces in model
  plotcolors                          :model colors file
  m                                   :first plot descriptor (mwq)    ...SEE
  dummywell                           :well coordinates                  FILE
  s                                   :shooting mode (sd)               NOTES...
  geometry5                           :receiver geometry              ..........
  sg                                  :second plot descriptor (sgq)   ...THIS
  rt                                  :job descriptor (rlt)              DIRECTORY
  demo9                               :output filename(s)
  -90.   90.                          :range of takeoff angles 
  .1                                  :increment in takeoff angle
  8000.0  10000.0  12000.0
  13000.0                             : velocities
  n                                   :direct wave? (y or n)
                                      :headwave interface numbers (1, 2, ...)
  y                                   :primaries? (y or n)
  