Synopsis
		sfcfftexp2 < data.rsf > image.rsf left=left.rsf right=right.rsf mig=n pad1=1 nz= dz= nt= dt=

Parameters
		float dt= time sampling (if modeling)   float dz= depth sampling (if migration)   file left= auxiliary input file name   bool mig=n [y/n] if n, modeling; if y, migration   int nt= time samples (if modeling)   int nz= depth samples (if migration)   int pad1=1 padding factor on the first axis   file right= auxiliary input file name