Program sftxrna3 | 3D space-noncausal t-x-y nonstationary regularized autoregression. 
[SYNOPSIS]
sftxrna3 < mat.rsf > pre.rsf a= niter=20 verb=n
[PARAMETERS]
ints    | a | = |   | 	 [mdim]
int     | niter | =20 |   | 	number of iterations 
bool    | verb | =n |  [y/n] | 	verbosity flag 
[DIRECTORY]
user/yliu
