@Musashi @jchd Jup, I am located in Germany. You can give me the links if you want to. I should know the basics already I hope 😉 It is a complex subject, as always when you look closer into something. Sure the countries handle this differently. That is one reason I like software licenses because they express the wish of the author with the knowledge that not every statement of the license is effective in every country. With this, most of the wishes you have are effective. For example the GPL has been subject of many court cases around the world already and it has proven to work.
"level of creativity": You are right. But for a long UDF file, this should definitely apply.
A note about the Creative Commons that has been mentioned. This license family, except maybe the public domain variants, are not suitable for software projects. That just as a reminder.