Program sfgbeamform | 2-D lateral smoothing. 
[SYNOPSIS]
sfgbeamform < in.rsf > out.rsf rect=3 adj=y repeat=2
[PARAMETERS]
bool    | adj | =y |  [y/n] | 	adjoint flag 
int     | rect | =3 |   | 	smoothing radius 
int     | repeat | =2 |   | 	triangle convolutions 
[DIRECTORY]
user/fomels
