boo-cool-robot:gleanling: A truth window (or truth wall) is an opening in a wall surface, created to
boo-cool-robot:gleanling: A truth window (or truth wall) is an opening in a wall surface, created to reveal the layers or components within the wall. In a strawbale house, a truth window is often used to show the walls are actually made from straw bales. [Image description: A decoratively carved frame with straw behind its glass door. /End ID] -- source link