Section 12 of the RTI Act deals with the establishment of the Central Information Commission, its composition (Chief Information Commissioner and Information Commissioners), their appointment, terms of office, service conditions, etc. Sections 18, 19, and 25 directly describe the duties, powers, and roles performed by the CIC in implementing the Act. Section 18 lists specific powers and functions related to inquiring into complaints. Section 19 details the appellate jurisdiction and powers. Section 25 mandates the CIC to monitor implementation and report. Section 12 is about creating the body itself.