def info_experiment(api, list_id=False, site=None, **selections):
    """ Print testbed information for user experiment submission:
    * nodes description
    * nodes description in short mode

    :param api: API Rest api object
    :param list_id: By default, return full nodes list, if list_id
        return output in exp_list format '3-12+42'
    :param site: Restrict informations collection on site
    :param **selections: other selections than site
    """
    return api.get_nodes(list_id, site, **selections)
