On Sun, Feb 26, 2017 at 11:55 PM, Cirilo Bernardo <[email protected] > wrote:
> > That depends on what you mean by 'free'. If the output is Public Domain > then > anyone can use it for whatever purpose they like and have no obligations. > Strictly speaking, I don't think we can actually put a creation of the type typically covered by copyright in the public domain. Copyright kicks in by default in most jurisdictions. Public domain is what happens when something is *not* subject to copyright. This can be because the law of a particular country says so, like in the case of US Government works [1] or, in the case of work of "normal" individuals, when copyright has expired. The closest to public domain you can get for things like images is a CC0 license [2]. It says that you waive your rights under copyright law but only "to the extent allowed by law." So CC0 is definitely an option, and so is CC-SA if you want people who modify symbols/footprints/etc and publish the results, to do so under the same licensing. In that case, we need an additional statement clarifying that this obligation does not extend to the whole schematics/layout and other composite works. Cheers, Javier [1] https://www.law.cornell.edu/uscode/text/17/105 [2] https://creativecommons.org/publicdomain/zero/1.0/
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