Program sfofilp | 2-D missing data interpolation by differential offset continuation. 
[SYNOPSIS]
sfofilp < in.rsf > out.rsf known=known.rsf niter=10 simple=n
[PARAMETERS]
file    | known | = |   | 	auxiliary input file name
int     | niter | =10 |   | 	number of iterations 
bool    | simple | =n |  [y/n] | 	if y, use simple h derivative for regularization 
[DIRECTORY]
user/fomels
