藝術與建築詞典根目錄
....物件層面
........組件 (層級名)
............成分
................<依特定背景區分之組件>
....................建築元素
........................<開口與開口結構>
............................開口
................................<依形式區分之開口>
....................................<窗戶與窗戶構造>
........................................窗戶
............................................<依形式區分之窗戶>
................................................豎框窗戶
|||....................................................雙孔窗
................................................凸窗 (牆面凸出結構)
|||....................................................圓肚窗
|||....................................................凸窗 (具托臂支撐)