Program sfnshape | Nonstationary autoregressive shaping 
[SYNOPSIS]
sfnshape < inp.rsf > out.rsf filt=fil.rsf eps=1.0f rect=1
[PARAMETERS]
float   | eps | =1.0f |   | 	regularization parameter 
file    | filt | = |   | 	auxiliary input file name
int     | rect | =1 |   | 	shaping radius 
[DIRECTORY]
user/yliu
