How to Use 2D View?
1. Click 3D in the footer.
2. Drag the left mouse to rotate. Right mouse to pan. Use the scroll wheel to zoom in or zoom out your camera.
How to Use 3D Walk
1. Click Walk under 3D in the footer to enter the walkthrough mode.
2. Hold down W，A，S，D in the keyboard to move the camera.
3. Drag to rotate and check details from the first-person perspective.
4. Use Q and E to adjust the camera height.