#proscenium_wall__proscenium  the wall that separates the stage from the auditorium in a modern theater
  supertype:  #wall  an architectural partition with a height and length greater than its thickness; used to divide or enclose an area or to support another structure; "the south wall had a small window"; "the walls were covered with pictures"
  part of:  #theater_stage
  part:  #proscenium_arch  the arch over the opening in the proscenium wall

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