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This is an important document which helps out when determining who owns the rights to an artistic body of work.
Learn it, know it, live it.
A golden rule you should keep in mind: The copyright on a work always belongs to the author, whether he was working on his own, on commission, freelance, on contract, as a consultant or pro bono ~ with the exception of works created by an employee or consisting of a photograph, engraving or portrait made to order ~ unless the copyright has been transferred to someone else by means of a signed document.
