Boundary marking.
D000203:Activities of Daily Living; D000223:Adaptation, Psychological; D000368:Aged / Q000523:psychology*; D006268:Health Facilities; D006272:Health Facility Environment; D006746:Hospital Bed Capacity, 500 and over; D006779:Hospitals, Public; D006783:Hospitals, State; D006801:Humans; D007389:Internal-External Control; D001523:Mental Disorders / Q000523:psychology*; D009511:New England; D010550:Personal Space; D011568:Psychiatric Nursing; D013731:Territoriality