Program sfdensity | Compute density 
[SYNOPSIS]
sfdensity < Fin.rsf inY=FinY.rsf inZ=FinZ.rsf inW=FinW.rsf > Fout.rsf verb=n n1=20 n2=20 n3=20 n4=20
[PARAMETERS]
file    | inW | = |   | 	auxiliary input file name
file    | inY | = |   | 	auxiliary input file name
file    | inZ | = |   | 	auxiliary input file name
int     | n1 | =20 |   | 	verbosity flag 
int     | n2 | =20 |   | 	verbosity flag 
int     | n3 | =20 |   | 	verbosity flag 
int     | n4 | =20 |   | 	verbosity flag 
bool    | verb | =n |  [y/n] | 	verbosity flag 
[DIRECTORY]
user/jyan
