Substantial question of law limits appeals to higher review and confines proceedings to the formulated issue. An appeal from the Appellate Tribunal's State or Area Benches to the High Court lies only where a substantial question of law is involved; the High Court may admit such appeal, prescribe time and form requirements, and condone delay for sufficient cause. The High Court formulates that question and confines the hearing to it (subject to recorded reasons to consider others), decides the question with reasons, may award costs, determine issues left undecided or wrongly decided by the Tribunal, and the appeal is heard by a Bench of at least two judges and decided by majority.