#CRT_screen__screen  display on the surface of the large end of a cathode-ray tube on which is electronically created
  supertype:  #display.electronic_device  an electronic device that represents information in visual form
  subtype:  #screen_background  #computer_screen
  part of:  #cathode-ray_tube
  part:  #foreground.window  (computer science) a window for an active application

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