Program sfbeamform | 2-D beam forming. 
[SYNOPSIS]
sfbeamform < in.rsf dip=dip.rsf > out.rsf rect=3 adj=y gauss=n order=1
[PARAMETERS]
bool    | adj | =y |  [y/n] | 	adjoint flag 
file    | dip | = |   | 	auxiliary input file name
bool    | gauss | =n |  [y/n] | 	use pseudo-gaussian 
int     | order | =1 |   | 	PWD accuracy order 
int     | rect | =3 |   | 	smoothing radius 
[DIRECTORY]
user/pwd
