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Public Domain Mark enables works that are no longer restricted by copyright to be marked as such in a standard and simple way, making them easily discoverable and available to others. The Public Domain Mark is recommended for works that are free of known copyright around the world. These will typically be very old works. [1]
For example, when using copyright law, those who contribute to a work under copyleft usually must gain, defer, or assign copyright holder status. [ citation needed ] By submitting the copyright of their contributions under a copyleft license, they deliberately give up some of the rights that normally follow from copyright, including the right ...