 Since "tatami" mats have a standardized size the floor plans for "shoin" rooms had to be developed around the proportions of the "tatami" mat; this in turn affected the proportions of doors, the height of rooms, and other aspects of the structure.Before the "shoin" popularized the practice of lining floors with "tatami" mats it had been standard to only bring out a single "tatami" mat for the highest-ranking person in the room to sit on.The architecture surrounding and influenced by the "shoin" quickly developed many other distinguishing features.