Mac OS X 小技巧 - 展開收合全部資料夾

http://mac-os-x-tricks.blogspot.com/2007/09/mac-finder-trick-expand-or-collapse.html:

"This is a trick you can do with the Finder in tree view. Press the left or right arrow keys while a folder is selected to expand or collapse it. You can first select all with Apple-A, then press left or right to expand or collapse every folder."


蠻實用的小技巧。