The document is a patient information leaflet that summarizes what it means to be placed under Section 3 of the Mental Health Act 1983. It explains that the patient has been detained in a mental health hospital based on the assessment of two doctors and an approved mental health practitioner that they are experiencing mental illness and require treatment. It notes the patient can be kept in hospital for up to 6 months under this section and may receive treatment including medication, with the goal of helping them recover sufficiently to be discharged.