Draw space Creates a space polygon on the DEND_RAUM layer in order to create the prerequisites for space-based drawing. Use the Draw function to create a spatial polygon by specifying two points. Specify the first point of the spatial polygon. Specify the diagonally opposite second point of the spatial polygon. Note: To optimise the use of the functions for space-based drawing, the space polygon must be drawn with the raw dimensions. The upper edge of the unfinished floor is recommended for the lower edge of the room polygon. The lower edge of the unfinished ceiling is recommended as the upper edge of the room polygon.