#theater_light__theaterlight  any of various lights used in a theater
  supertype:  light_source__lightsource__light  any device serving as a source of illumination; "he stopped the car and turned off the lights"
  subtype:  footlight  theater light at the front of a stage that illuminate the set and actors
  member:  houselights__houselight  lights that illuminate the audience part of a theater or other auditorium
  member:  calcium_light__calciumlight__limelight  a lamp consisting of a flame directed at a cylinder of lime with a lens to concentrate the light; formerly used for stage lighting
  member:  spotlight__spot  a lamp that produces a strong beam of light to illuminate a restricted area; used to focus attention of a stage performer

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