Docking windows are windows that can be added to or grouped with other windows, or they can be moved so that they float alone. When a docking window is dropped into a suitable container window, the tools of the dropped window are added to the container window, and the icon representing the newly dropped window is displayed in the tab set.
In 3D environments, PathFinder is a docking window that is a member of a tab set. The tab set may include the Feature Library, Family of Parts, Layers, and the Sensors pane, among others. Each tab is its own docking window, which may be removed and managed independently of the others.
In 2D environments, the Library is a docking window that also includes these tabs in its tab set: Groups, Layers, and Queries.
Other docking windows include PromptBar, command bar, and the Help window. These do not contain tab sets in their default state.