def _do_magick_convert_enlighten_border(width, height):
    """
    Build the command line arguments to enlighten the border in four regions.

    :param int width: The width of the image.
    :param int height: The height of the image.

    :return: Command line arguments for imagemagicks’ `convert`.
    :rtype: list
    """
    border = int(round((width + height) / 2 * 0.05))
    r = '{}x{}'.format(width - border, border), '{}x{}+{}'.format(border, 
        height - border, width - border), '{}x{}+{}+{}'.format(width -
        border, border, border, height - border), '{}x{}+{}+{}'.format(border,
        height - border, 0, border)
    out = []
    for region in r:
        out += ['-region', region, '-level', '0%,30%']
    return out
