Program sfpostfilter2 | Convert B-spline coefficients to data in 2-D. 
[SYNOPSIS]
sfpostfilter2 < in.rsf > out.rsf nw= vert=y horz=y
[PARAMETERS]
bool    | horz | =y |  [y/n] | 	include filter on the second axis 
int     | nw | = |   | 	filter size 
bool    | vert | =y |  [y/n] | 	include filter on the first axis 
[DIRECTORY]
system/generic
