Another dimension for analyzing language rights is with degree of overtness and covertness.
From the en.wikipedia.org
Is it the secretiveness and the covertness?
From the time.com
Degree of overtness refers to the extent laws or covenants are explicit with respect to language rights, and covertness the reverse.
From the en.wikipedia.org
In an era of Internet spoilers, fan blogging and online video diaries where filmmakers show off their tricks, Indy returns with the old-fashioned covertness Spielberg always has favored.