The ToolWindow control provides a container that can be docked within the DockingManager. You can place other controls (either Telerik RadControls or standard Windows Forms controls) within a ToolWindow.
You can specify whether the ToolWindow object is floating, docked, nested, autohidden, pinned, or tabbed to the current position on the form. In accordance with the specified behavior, the state button of the corresponding ToolWindow will show the possible state choices.
You can also get increased ToolWindow functionality with horizontal and vertical splits.