Window.Document Property (Word)
Returns a Document object associated with the specified pane, window, or selection. Read-only.
expression A variable that represents a 'Window' object.
This example sets myDoc to the document associated with the active window. The focus is changed to the next window, and the window is split. The Activate method is used to switch back to the original document.
Set myDoc = Application.ActiveWindow.Document If Windows.Count >= 2 Then Application.ActiveWindow.Next.Activate Application.ActiveWindow.Split = True myDoc.Activate End If