One thing to note is that in debian it is distributed under non-free. So perhaps someone might like to comment on if the license is valid for setup.exe distribution.
If Debian has put it under non-free it does not meet Debian's poliy for main. It's problamy not compatible with GPL or the OpenSource Definition
For reference: http://www.research.att.com/sw/tools/graphviz/license/index.html http://www.research.att.com/sw/tools/graphviz/download.html
I could not find the license under OSD Approved Licenses. And it's way too longer to get an idea about it without spending several hours with a lawyer 8-(
http://www.opensource.org/licenses/index.php
-- Med venlig hilsen / Kind regards
Hack Kampbjørn
