Synopsis
		sffft1 < in.rsf > out.rsf inv=n sym=n opt=y

Parameters
		bool inv=n [y/n] if y, perform inverse transform   bool opt=y [y/n] if y, determine optimal size for efficiency   bool sym=n [y/n] if y, apply symmetric scaling to make the FFT operator Hermitian

Used In
		BEI          fdm/kjartjac ft1/plane4 ft1/ft2d ft1/autocor   CWP          geo2007StereographicImagingCondition/sigsbee2 geo2008NumericWEMVAoperators/saltWEMVA geo2008NumericWEMVAoperators/flatWEMVA jse2006RWEImagingOverturningReflections/sigsbee   DATA          sigsbee/ptest   GEO384W          hw4/dome hw5/hyper   GEO391          hw3/pocs   JSG          atten/karman1 atten/karmand atten/spectra atten/enerd diffr/fault nmo3/mcelroy seislet/plane seislet/lena simistack/bei time2depth/masha2   RSF          rsf/rsftour school/single school/complex scons/rsfpy su/rsflab10   SEP          fkamo/impresp oc2/ocimp oc2/elfshot oc2/cup vc2/spec velspec/sigvc