Article 20
1. Everyone has the right to use the language historically spoken in a territory, both orally and in writing, in the Courts of Justice located within that territory. The Courts of Justice must use the language specific to the territory in their internal actions and, if on account of the legal system in force within the state, the proceedings continue elsewhere, the use of the original language must be maintained.

2. Notwithstanding the above, everyone has the right to be tried in a language which s/he understands and can speak and to obtain the services of an interpreter free of charge.