Synopsis
		sfenoint2 < in.rsf > out.rsf head=head.rsf xkey= ykey= interp=2 xk= yk=

Parameters
		file head= auxiliary input file name   int interp=2 interpolation order   string xk= x key name   int xkey= x key number (if no xk), default is fldr   string yk= y key name   int ykey= y key number (if no yk), default is tracf

Used In
		SEP          precon/cube