One of the things that is different is the matter of Moral Rights such as the right to be attributed as the author of the copyrighted work. In some jurisdiction

One of the things that is different is the matter of Moral Rights such as the right to be attributed as the author of the copyrighted work. In some jurisdictions those rights cannot be waived. https://en.wikipedia.org/wiki/Moral_rights https://en.wikipedia.org/wiki/Moral_rights