[accessibleimage] tactile graphic for the Index-s

Hi there:
I just got my first real Braille printer and would like to test its graphical 
capabilities.  Does anyone have an example of a graphic I could print on it?  
Or are there any accessible graphical programs that I might be able to use?  
The program "WinBraille" which comes with the printer is able to emboss any 
graphic as long as it's doctored in its graphical editor, which looks not to be 
very accessible.  
Any ideas would be greatly appreciated.  
Cheers,
martin

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