def _unlParseNodePart(nodePart):
    """
    Parse the Node part of a UNL

    Arguments:
        nodePart: The node part of a UNL

    Returns:
        unlList: List of node part parameters
            in root to position order.

    """

    if not nodePart:
        if nodePart is None:
            return None
        else:
            return ['']
    return nodePart.split('-->')