def _applySpecial_VectorOpts_orientFlip(args, overlayList, displayCtx, target):
    """Applies the ``VectorOpts.orientFlip`` option.

    The :attr:`.VectorOpts.orientFlip` property is initialised to ``False``
    for images with a radiological storage order, and ``True`` for images with
    a neurological storage order. So if this argument is specified, we need to
    invert its initial value - apply the flip for radiologically stored
    images, but not for neurologically stored images.
    """
    target.orientFlip = not target.orientFlip
