Program sfagc | Automatic gain control. 
[SYNOPSIS]
sfagc < in.rsf > out.rsf repeat=1 rect#=(125,1,1,...)
[COMMENTS]

October 2011 program of the month:
http://ahay.org/blog/2011/10/01/program-of-the-month-sfagc/

[PARAMETERS]
int     | rect# | =(125,1,1,...) |   | 	smoothing radius on #-th axis 
int     | repeat | =1 |   | 	repeat filtering several times 
[DIRECTORY]
system/generic
