Z:gnu-www-ja-enforcing-gpl--208d78-This right to exclude implies/en

This right to exclude implies an equally large power to license&mdash;that is, to grant permission to do what would otherwise be forbidden. Licenses are not contracts: the work's user is obliged to remain within the bounds of the license not because she voluntarily promised, but because she doesn't have any right to act at all except as the license permits.