This document discusses the admission and discharge of mentally ill patients. It defines admission as allowing a patient to stay in the hospital for care and discharge as releasing a patient. Admission can be voluntary if requested by the patient or guardian, or involuntary if requested by others against the patient's will. Discharge includes releasing patients admitted voluntarily based on doctor approval, releasing involuntary patients to caregivers with bonds, and releasing prisoners based on fitness for trial. The roles of nurses include intake assessments, discharge planning, and ensuring legal and ethical standards are followed.