Program sfexpl2 | 2-D anisotropic diffusion by box cascade. 
[SYNOPSIS]
sfexpl2 < in.rsf > out.rsf cycle=1 rect= pclip=50.
[PARAMETERS]
int     | cycle | =1 |   | 	number of cycles 
float   | pclip | =50. |   | 	percentage clip for the gradient 
int     | rect | = |   | 	vertical smoothing 
[DIRECTORY]
system/generic
