Public Domain Mark
Public Domain Mark (PDM) is a symbol used to indicate that a work is free of known copyright restrictions and therefore in the public domain. It is analogous to the copyright symbol, which is commonly used to indicate as copyright notice that a work is copyrighted. The Public Domain Mark was developed by Creative Commons.
- "Creative Commons announces the Public Domain Mark". The H Open. The H. 2010-10-12. Retrieved 2010-10-12.
- Diane Peters (2010-10-11). "Improving Access to the Public Domain: the Public Domain Mark". Creative Commons. Retrieved 2010-10-12.
- Public Domain
- Wikimedia Commons category containing media files marked with the Public Domain Mark
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