This architectural drawing is Detail section of Proscenio in AutoCAD 2D, dwg file, CAD file. The term "proscenium" refers to the metaphorical vertical plane of space in a theatre that is usually framed by a physical proscenium arch on the top and sides and the stage floor itself on the bottom. This frame allows the audience to view the action on the stage during a theatrical performance from a more or less unified angle. For more details and information download the drawing file.