The last slide (file slide3.jpg) links back to Slide 4 and forward to Demo 1. Its forward hotspot is the widest of any slide, about 176 pixels across, as if to make the jump from explanation to walkthrough hard to miss. The demo screens that follow are a different size and file type: 800 by 574 PNGs named Canvas_1 to Canvas_10, against 800 by 618 JPEGs for the slides.
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.