Synopsis
		sftshift < Fstk.rsf velocity=Fvel.rsf dip=Fdip.rsf > Fang.rsf na=nv da=1./(nv-1) a0=0. extend=4 cos=n

Parameters
		float a0=0.   bool cos=n [y/n] if n, convert pseudo-v to pseudo-tan(theta); if y, compute cos(theta) from 1/|pm|   float da=1./(nv-1)   file dip= auxiliary input file name   int extend=4 tmp extension   int na=nv   file velocity= auxiliary input file name

Used In
		CWP          geo2006TimeShiftImagingCondition/flat geo2006TimeShiftImagingCondition/icomp geo2006TimeShiftImagingCondition/zicig