r                                :job option (s,r)
1  25                            :first, last shot for sort
1  10                            :first, last trace OR first last receiver
10.  25.   35.  50.              :frequency spectrum of wavelet
.150                             :wavelet length (secs)
.004                             :sample rate (secs)
2.                               :record length (secs)
demo12shot                       :input filename
demo12traces                     :output filename
