You can control the states of a Dockable window as follows:
1. Right-click
the title bar of the window to display a popup menu.
You can also control Auto-Hide Window States as follows:
2. The Auto-Hide icon is toggle between Auto-Hide state
and Dockable state:
3. If you click the Auto-Hide icon, the window displays
as one on the left. As soon as you place mouse over the hidden window,
the window is shown on the right:
4. If you toggle back to Dockable window, then the Auto-Hide Window is displayed open.
For an overview of Dockable windows, see Dockable Windows.