The way USA.gov puts it, government works are "not subject to copyright" or restrictions thereof, which I think explains the situation better.
I am having a hard time finding a model for (or even discussion about) what happens when government works have been derived from copyrighted material. Anyone know of another example?
But I'm assuming that since there is no copyright to the additions, from a copyright point of view it's essentially equivalent to the software from which it's derived.
I am having a hard time finding a model for (or even discussion about) what happens when government works have been derived from copyrighted material. Anyone know of another example?
But I'm assuming that since there is no copyright to the additions, from a copyright point of view it's essentially equivalent to the software from which it's derived.