However, such a definition would exclude the Open Content License (OPL) because that license forbade charging 'a fee for the itself', a right required by free and open-source software licenses.
然而，这样的定义会把开放内容许可证（OPL）自身排除在外，因为该许可证禁止“对自身收费”，但此权利是自由和开源软件许可证的要求。