Demo 6 goes the other way: one modest hotspot, 104 by 126 pixels, toward the left, leading to Demo 7. Big and small targets alternate through the walkthrough, which keeps the viewer looking at the screen instead of clicking anywhere.
The frame above is drawn at the original proportions. Each dashed box sits where the 2009 hotspot sat and links to the same screen it did then, so the tour can still be walked end to end.