Right to information appeals require senior-officer review and commission adjudication with binding remedial powers and third-party hearing. Any person aggrieved by a Central or State Public Information Officer's decision, or who does not receive a decision in time, may appeal first to a senior officer within the public authority and thereafter to the Central or State Information Commission; appeals against third party disclosure orders are subject to the same limitation for the third party. The Public Information Officer bears the onus to justify denials, third parties must be heard where affected, appeals are to be disposed of within prescribed periods with limited extensions, and the Information Commissions have binding powers to secure compliance and provide specified remedies.