In Finder's list view, you can click the little triangles to the left of folder icons in order to reveal the contents of the folder. In 10.7 Lion, this reveal/expansion is accompanied by a vertical ...
OS X Lion is quite demanding for old Macs. Even though I own a 15'' MBP early 2011 with the 'powerful' Intel HD 3000 for integrated graphics, some animations just don't feel right (low fps). This is ...