Public domain
Public domain is one of the free licenses, clearly described by Creative Commons.
General rules
editPublic domain can be the result of either:
- 70 years after the death of the author
- autonomous decision by the author
- generic decision by the government (USA)
National exceptions can be valid (extended rights in France for war victims).
Combinations
editCombinations can be made, i.e. the base text in CC BY-SA, the publication under classic copyright as with the book Schrijven voor Wikipedia.