1. Everyone convicted of a criminal offence by a tribunal shall have the right to have his conviction or sentence reviewed by a higher tribunal. The exercise of this right, including the grounds on which it may be exercised, shall be governed by law.
2. This right may be subject to exceptions in regard to offences of a minor character, as prescribed by law, or in cases in which the person concerned was tried in the first instance by the highest tribunal or was convicted following an appeal against acquittal.