[gradsusr] polyf

[Rusmawan Suwarman]

Dear groups
I used draw polyf x1 y1 .. xn yn to make a square, the problem is, I want that 
square have not fill color (transparan) to make the background can be seen.
I've tried set line command, but the result always same, the background can not 
be seen
How should I do? or any other command to make it?

Thanks in advance
Rusmawan Suwarman
---------------------------------------------
Doctoral Students
Department of Life and Environmental Sciences
Graduate School of Sciences and Technology
Kumamoto University
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