#picture_plane__pictureplane  the plane that is in the foreground of a drawing or painting; coextensive with but different from the objective surface of the work
  supertype:  #plane.shape__sheet  (mathematics) an unbounded two-dimensional shape; "we will refer to the plane of the graph as the X-Y plane"; "any line joining two points on a plane lies wholly on that plane"
  part of:  #linear_perspective__perspective  the appearance of things relative to one another as determined by their distance from the viewer

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