(It is intended that these changes allow more consistent behavior to be defined and implemented (which? example). In response to feedback from customers, we hope to improve these classes even further.)

Dock widgets are animated when docking or detaching from a dock area. The dock areas will also adjust their size to show where the dock widget will dock when it hovers over it. This animation can be turned off with setAnimated().

By default, dock widgets are added to the dock areas in a single row. By setting nesting enabled with setDockNestingEnabled(), the widgets can be added both vertically and horizontally.

Two dock widgets can occupy the same space in a dock area. The user can then choose which widget that is visible with a tab bar that is located below the widgets. The QMainWindow::tabifyDockWidget() joins two tab widgets in such a tabbed dock area. (revise the entire paragraph)