Program sfdonut | Donut filter 
[SYNOPSIS]
sfdonut data=data.rsf < hole.rsf > filt.rsf adj=n na=
[PARAMETERS]
bool    | adj | =n |  [y/n] | 	
file    | data | = |   | 	auxiliary input file name
int     | na | = |   | 	
[DIRECTORY]
user/fomels
