    def border_box(self):
        """
        Instance of :class:`~asciimatics.utilities.BoxTool` that specifies the characters used to
        draw the border to this frame. You can change the border character style by modifying the
        :attr:`style` property on this object. Allowed styles are defined in
        :mod:`~asciimatics.constants`.

        """
        return self._border_mgr.box
Instance of :class:`~asciimatics.utilities.BoxTool` that specifies the characters used to
draw the border to this frame. You can change the border character style by modifying the
:attr:`style` property on this object. Allowed styles are defined in
:mod:`~asciimatics.constants`.
asciimatics/widgets/frame.py