Also note that Command-clicking the hide/show toolbar control at the right of the window's titlebar will now cycle through toolbar views as follows:
10.1: icon & text → icon → text
10.2: icon & text → small icon & text → icon → small icon → text → small text
As stated in a previous hint, this Command key trick works in apps like System Preferences that otherwise won't let you change the toolbar view.
[Editor's note: Unfortunately, this does not work in the Finder...]

