The 3D editor consists of 4 views:
The default scene is a cube.
To move a point select the point in one of the orthogonal views and click the desired new location in that view.
To delete a point, select the point in the bottom left view and click 'delete'.
To add a point, click the 'add' button.
To rotate the camera click a location in the perspective view.
To change the perspective of the view, click the + or the - buttons.
Use the permalink to save a scene: copy the url.