I believe you don't want to miss all this features, such as Quick Look and Fan View.
Control-Click on your Folder that sits on the Dock. When the contextual menu appeared, mouse hover the View as and there will be three types of new view for Leopard : Automatic, Fan, and Grid.
If you choose automatic view, Leopard will automatically switch to fan view if your folder only has some contents and will switch to grid view for folder with a bunch of contents.
Now, put your Dock on the left of the screen and show up the contextual menu. You won't see any option called View as here because the view is only Grid View.
Let's look inside Show View Options (Click on the Desktop background and use keystroke Command-J) of your Desktop. Oh~ There is something new here, the Grid Spacing feature. It helps you adjust (using the slider) left and right spacing among your Desktop icons.
Another new feature on Leopard. Leopard will show up a Quick Look pane for selected items. It looks like a mini-slideshow, but you can change the slideshow items over time. It can go full screen and remind you on Tiger full screen slideshow.
Leopard's way to tidy up messy Desktop icons. If we ask Leopard to do Clean Up for us, what will happen is that our icons will be snapped to grid. We can also ask Leopard to do Clean Up only for certain highlighted icons, i.e. Clean Up Selection.
It's like old Tiger sorting, by Name, Date or Kind, the new feature in Leopard is that we can perform sorting instantly from contextual menu. Unlike old Tiger that we need to perform sorting from View Options Pane.
This is similar to Spotlight, with the only difference in searching target. This help bar searching targets are all topics relevant to your current location. For example, if your front pane is Finder, it will search for Mac Help.
Sometimes, it will redirect you to menu bar. For example, I typed in Font in TextEdit help bar, then Leopard will point to specified format. If you click on it, Leopard will automatically do that action for you.
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