There will be a pause before the page appears while the data is compiled into a webGL object.
Just click on the link above for the stock set you are interested in.
There will be a pause before the page appears while the data is compiled into a webGL object - so be patient initially.
In landscape mode, there is a 3D cube on the left and a set of controls on the right.
In portrait mode, the cube takes up the top half of the screen, and the controls occupy the bottom half.
You can also move the slider to a time of your choosing while the 'play/pause' button is in the 'pause' state.
On a desktop, you can zoom into the view using the mouse scroll wheel, and you can move the cube to change the view by dragging it with the mouse.
On tablets and other touch devices this might not work and you will need to use the 'rotate' button or the slider near it to change the view of the cube.
The size of the sphere representing a stock is proportional to its market cap. You can rarely see this change, but AAL is a good example of a stock which grows noticeably over the time period of the animation.
When there is no data (my database is full of holes, especially for very large stocks) the sphere will display in grey until the animation reaches a date where there is data again.