Vtk would fit in non-free. I think it's worth it to ask them to modify their license to fit the DFSG, I'll fire off a note. This probably means changes in diff files only (which Ian hates, but I still think is a good compromise). Thanks Bruce -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to debian-devel-request@lists.debian.org . Trouble? e-mail to templin@bucknell.edu .