[pstricks] Venn Diagram example?

[Herbert Voss]

Doug Mounce wrote:
> Anyone have a simple Venn diagram sample they could share?  I just  want 
> three circles I can adjust for relative size, but I can't decide  on the 
> best way to shade the overlap, thanks, Doug

http://www.venndiagram.com/venn01.html  makes live easy ... :-)
http://PSTricks.tug.org/main.cgi?file=beamer/beamer
as an example for "transparency" colors.

Herbert