Program sfpad2 | Pad boundary 
[SYNOPSIS]
sfpad2 < Fin.rsf > Fout.rsf top=0 bottom=0 left=0 right=0
[PARAMETERS]
int     | bottom | =0 |   | 	
int     | left | =0 |   | 	
int     | right | =0 |   | 	
int     | top | =0 |   | 	
[DIRECTORY]
user/zhiguang
