Program vp7ab | 
[SYNOPSIS]
vp7ab c=c.rsf d=d.rsf > plot.vpl top=5. c1=0.5 c2=5.
[PARAMETERS]
string  | c | = |   | 	auxiliary output file name
float   | c1 | =0.5 |   | 	
float   | c2 | =5. |   | 	
string  | d | = |   | 	auxiliary output file name
float   | top | =5. |   | 	
[DIRECTORY]
plot/test
