Dupe a group in CS6

In previous Photoshop versions, you could duplicate a layer with a single key command. But you could only dupe one layer at a time, and not a layers group. Now in Photoshop CS6, you can apply the same keyboard shortcut to a layer group or to multiple layers at once. To dupe a layer group, simply select the layer group, press [Ctrl]J ([command]J on the Mac) and Photoshop will duplicate your layer group, as shown in Figure A. To dupe multiple layers at the same time, [Shift]-click multiple contiguous layers or [Control]-click ([command]-click on the Mac) multiple non-contiguous layers, and then press the same keyboard command.