def make_b2_delete_note(version, index, transferred):
    """
    Create a note message for delete action.

    :param b2sdk.v2.FileVersion version: an object which contains file version info
    :param int index: file version index
    :param bool transferred: if True, file has been transferred, False otherwise
    """
    note = ''
    if version.action == 'hide':
        note = '(hide marker)'
    elif transferred or 0 < index:
        note = '(old version)'
    return note