Section 20 refers to a provision in the Mental Health Act that allows for the detention of individuals in a hospital for assessment and treatment. This section is typically used when a person is deemed to be a risk to themselves or others due to a mental health condition. The aim is to ensure that they receive the necessary care and support. Under Section 20, individuals can be admitted to a hospital voluntarily or involuntarily, depending on the circumstances. The process involves a thorough assessment by mental health professionals, ensuring that the rights and well-being of the individual are prioritized throughout their treatment.