This document provides information about correction and the correction process. It defines correction and describes it as the 4th pillar of the Philippine criminal justice system. It outlines the types of correction as institutional and non-institutional. It also discusses prisons and jails, noting that prisons are for sentences over 3 years while jails are for under 3 years. The document then covers the history and theories of punishment and penology. Finally, it outlines the Bureau of Jail Management and Penology's powers, functions, and operating manual regarding inmate commitment and discipline.