Program sflapfill | Missing data interpolation in 2-D by Laplacian regularization. 
[SYNOPSIS]
sflapfill < in.rsf > out.rsf mask=mask.rsf niter=200 grad=n verb=n
[PARAMETERS]
bool    | grad | =n |  [y/n] | 	if y, use gradient instead of laplacian 
string  | mask | = |   | 	optional mask file with zeroes for missing data locations (auxiliary input file name)
int     | niter | =200 |   | 	number of iterations 
bool    | verb | =n |  [y/n] | 	verbosity flag 
[DIRECTORY]
system/generic
