Synopsis
		sfpermlr2 < vel.rsf fft=fft.rsf left=left.rsf > right.rsf seed=time(NULL tol=1.e-4 npk=20 dt= nh=

Parameters
		dt= time step   file fft= auxiliary input file name   file left= auxiliary output file name   nh=   npk=20 maximum rank   seed=time(NULL   tol=1.e-4 tolerance