Window | MDI Emulation
Select MDI Emulation on the Window menu to cause WinDbg to emulate the Multiple Document Interface (MDI) style of windowing. This kind of windowing differs from docking mode because all windows are floating, but floating windows are constrained within the frame window. This behavior emulates the behavior of WinDbg before docking mode was introduced.
Clear MDI Emulation on the Window menu to return WinDbg to docking mode.
For more information about docked, tabbed, and floating windows, see Positioning the Windows.