Synopsis
		sfreal < cmplx.rsf > real.rsf

Used In
		BEI          ft1/ft2d ft1/ft2d ft1/plane4 ft1/brad   CWP          geo2006TimeShiftImagingCondition/flat geo2007StereographicImagingCondition/sigsbee2 gpr2007RWEHighOrderKernels/diving gpr2007RWEHighOrderKernels/marm jse2006RWEImagingOverturningReflections/sigsbee   DATA          sigsbee/pwemig sigsbee/ptest   GEE          lsq/antoine   GEO384W          hw5/sigsbee hw5/hyper   GEOSTATS          atten/random atten/vvdata atten/karman atten/karman1 atten/karman2 atten/karmand simulate/rfield simulate/simple spatial_stats/gr_variogram spatial_stats/variogram spatial_stats/covariance spatial_stats/correlogram   RSF          rsf/fractal   SEP          fmsec/cvel fmsec/cvel huygens/gauss huygens/marmousi oc2/cup velspec/sigvc