Open Sez Me
You can open any icon in the Finder — whether it’s a file or a folder — in at least six ways. (Okay, there are at least seven ways, but one of them belongs to aliases, which I discuss in great detail back in Chapter 5.) Anyway, here are the ways:
Click the icon once to select it and choose File⇒Open.
Click the icon twice in rapid succession.
If the icon doesn’t open, you double-clicked too slowly. You can test (and adjust) your mouse’s sensitivity to double-click speed in the Mouse (or Trackpad) System Preferences pane, which you can access by launching the System Preferences application (from the Applications folder, the Dock, or the menu) and then clicking the Mouse (or Trackpad) icon.
Select the icon and then press either 
+O or +
.
Right-click or Control-click it and then ...
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