Synopsis
		sfrandrefl > mod.rsf vpvs=vpvs.rsf fo= nr= n1=3501 d1=0.001 o1=0.0 tscale=1. func=

Parameters
		float d1=0.001 time sampling   floats fo= [3]   string func= type of vpvs function   int n1=3501 time length   int nr= number of reflectors   float o1=0.0 time origin   float tscale=1. maximum time   file vpvs= auxiliary output file name