Open Publication License
2018年10月18日閲覧。
1 2 3 4 “Various Licenses and Comments about Them - Open Publication License, Version 1.0”. fsf.org. The Free Software Foundation (2018年10月17日). 2018年10月18日閲覧。 “This license can be used as a free documentation license. It is a copyleft free documentation license provided the copyright holder does not exercise any of the “LICENSE OPTIONS” listed in Section VI of the license. But if either of the options is invoked, the license becomes nonfree. In any case, it is incompatible with the GNU FDL... Please note that this license is not the same as the Open Content License. These two licenses are frequently confused, as the Open Content License is often referred to as the “OPL”.