Synopsis
		sfagc < in.rsf > out.rsf repeat=1 rect#=(125,1,1,...)

Parameters
		int rect#=(125,1,1,...) smoothing radius on #-th axis   int repeat=1 repeat filtering several times

Used In
		BEI          dpmv/krchdmo krch/wgkirch vela/vscan   GEE          pch/steep   JSG          diffr/gom diffr/fault simistack/bei time2depth/masha2 timelapse/duri