[Image-SIG] Cookbook for making transparent indexed png images ?

[Rodrigo Dias Arruda Senra]

[ Rodrigo Dias Arruda Senra <rodsenra at gpr.com.br> ]:
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| >  Hi,
> 
>  I would appreciate any hint or documentation pointers on the subject.

Answering my own dumb question ;o),
I found up-to-date info that solved the problem here:
http://effbot.org/zone/pil-format-png.htm

By the way, I'd like to thank all that controbuted to this wonderful
tool (specially Fredrik).

cheers,
Rod Senra