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About Public Domain Plug
The term “public domain” refers to creative materials that are not protected by intellectual property laws such as copyright, trademark, or patent laws. The public owns these works, not an individual author or artist. Anyone can use a public domain work without obtaining permission, but no one can ever own it.
- “Stanford University Libraries”
While the slang plug initially and especially refers to linking people together for drug-related transactions, plug spread by the 2010s for a source of any rare or desirable item.
