Synopsis
		sfescnband2 < spdom.rsf > out.rsf vspl=vspline.rsf na=360 mdist=SF_HUGE morder=ESC2_MORDER atraced=n mtraced=n cmix=y tracebc=y verb=n

Parameters
		bool atraced=n [y/n] true - output map of all traced points   bool cmix=y [y/n] true - check for color mixing   float mdist=SF_HUGE Maximum distance between points in F-D stencil   int morder=ESC2_MORDER Maximum order in F-D stencil   bool mtraced=n [y/n] true - output map of points traced because of mdist criterion   int na=360 Number of phase angles   bool tracebc=y [y/n] n - do not trace B.C. points   bool verb=n [y/n] verbosity flag   string vspl= Spline coefficients for velocity model (auxiliary input file name)