Synopsis
		sfcisolr2 < vel.rsf fft=fft.rsf left=left.rsf > right.rsf seed=time(NULL eps=1.e-4 npk=20 dt= os=true sub=false sub=true lap=false

Parameters
		dt= time step   eps=1.e-4 tolerance   file fft= auxiliary input file name   lap=false   file left= auxiliary output file name   npk=20 maximum rank   os=true   seed=time(NULL   sub=true for twostep, default true