The Builder Xcessory uses the application resource useWmTitleBar, which takes a boolean value and is True by default. When the value is False, a label is displayed across the top of the extended editors with the same information that is in the window manager's title bar.
Note: This is useful for users who set up their window managers without title bars on transient windows. If the user sets this resource to False, and allows the window manager to set up title bars on transient windows, the displayed information is redundant.