def save_cluster(cluster):
    """Save cluster's units and origin

    Parameters
    ----------
    cluster : class
        StarCluster

    Returns
    -------
    cluster.units, cluster.origin : str
        units and origin of StarCluster

    History:
    -------
    2018 - Written - Webb (UofT)
    """

    return cluster.units, cluster.origin, cluster.rorder, cluster.rorder_origin