200
These are 3 parts of the acting space.
What are above, apron, arch, arena, backing, batten, below, border, box set, callboard, cyclorama, downstage, drop, flat, flies, forestage, fourth wall, Green Room, grid, ground plan, house, legs, mask, props, proscenium, rake, scrim, sight lines, spill, stage left, stage right, teaser, thrust, tormenters, wings.