 We start with Leopard's default desktop image
|  A crease line falls a little more than half way up...
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 The top of the screen is revealed as the fold transition continues...
|  The next slide begins its reveal as the fall continues...
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 The next slide becomes part of the fold transition... perhaps a "spindle and mutilate" transition is on its way too? ;-0
|  The fold transtion is almost complete...
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 Done! 5M copies of Leopard folded!
|  Another new transition...
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 ... begins with a twist bottom left of screen...
|  ... it looks like a page flip we've seen before from the right
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 ... and still looking like a page flip..
|  ... but now we see a twist on the fold element as Today distorts...
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 ... Today is gone as it twists outa sight...
|  ... Today goes so quickly...
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 ... and the twist is complete...
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