Draw the floor boundaries, using one of the following methods: - Pick walls: By default, Pick Walls is active. If it is not active, click Modify | Create Floor Boundary tabDraw panel (Pick Walls). Select walls in the drawing area to use as floor boundaries.
- Sketch boundaries: To sketch the profile of the floor, click Modify | Create Floor Boundary tabDraw panel, and select a sketching tool. See Sketching.
The floor boundary must be a closed loop (profile). To create an opening in the floor, you can sketch another closed loop where you want the opening to appear.