Section 17 Right to one's language and culture (...) The right of everyone to use his or her own language, either Finnish or Swedish, before courts of law and other authorities, and to receive official documents in that language, shall be guaranteed by an Act. (...) Provisions on the right of the Sami to use the Sami language before the authorities are laid down by an Act. The rights of persons using sign language and of persons in need of interpretation or translation aid owing to disability shall be guaranteed by an Act. Section 21 Protection under the law Everyone has the right to have his or her case dealt with appropriately and without undue delay by a legally competent court of law or other authority, as well as to have a decision pertaining to his or her rights or obligations reviewed by a court of law or other independent organ for the administration of justice. Provisions concerning the publicity of proceedings, the right to be heard, the right to receive a reasoned decision and the right of appeal, as well as the other guarantees of a fair trial and good governance shall be laid down by an Act.