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Originally Posted by orcinus
It does and you can... 
The first as evidenced by bookmark dates and CPU specs, the second as evidenced by numerous in-place refreshed GUI elements (animated Sync icon, illegal operation icon, volume icon/bars, menu items etc.) |
I believe it "appears" that they are doing inplace refresh, but that is only because the only thing on the screen that changes is the one item. If that wasn't the case I don't think it would take as long to move a menu item selector as it does to turn a page.
That was/is actually a trick used by Web Developers (prior to AJAX being viable) in which they would only change a "portion" of the page. What really happened was the full page was re-rendered but you didn't notice it because the only change was one word or picture or whatever.
But, this is still my "educated guess" and I am not 100% sure. I've been wrong before.
BOb