dd(make_cube(1, 0x00ff00, [0, 0, 0]));
            viewer.scene.add(make_cube(0.5, 0xff0000, [0.75, 0, 0]));
            viewer.scene.add(make_cube(0.5, 0x0000ff, [-0.75, 0, 0]));
            const orthcam = new MeshCat.THREE.OrthographicCamera(2, 2,  2, -2,0, 1000);

            // Use the commands to enable WebXR and controllers. This implicitly
            // tests Viewer's corresponding methods.

            // We'll document what is happening and what the expected outcome
            // should be.
    