It toggles your dock between 3D and 2D. The 3D setting still has the dots, but they're very hard to see. So I was wrong about them disappearing entirely, but that's the change I was referring to.
If you still have the 2D look in Lion perhaps you ran this command previously under Leopard? I did, and the setting survived my upgrade to Lion, so I still have the 2D enabled.
Re:Lion Is a Quitter
by alex_c on Tuesday August 09, 2011 @09:28PM
(#2866311)
Ah, I only started using a Mac with 10.5 - the 3D dock with the faint dots is the only one I've ever known. It took me a while to notice the dots and realize what they mean.
http://hints.macworld.com/article.php?story=2007101815375480
It toggles your dock between 3D and 2D. The 3D setting still has the dots, but they're very hard to see. So I was wrong about them disappearing entirely, but that's the change I was referring to.
If you still have the 2D look in Lion perhaps you ran this command previously under Leopard? I did, and the setting survived my upgrade to Lion, so I still have the 2D enabled.