in an advisory capacity: vicars general and episcopal, presidents of Catholic universities, deans of Catholic departments of theology and canon law, some major superiors elected by all the major superiors in the territory, some rectors of seminaries elected by the rectors of seminaries in the territory, and two members from each cathedral chapter, presbyterial council, or pastoral council in the territory (can. 443). The convoking authority can also select other members of the faithful (including the laity) to participate in the council in an advisory capacity. Meetings of the entire episcopate of a supra-national region have historically been called councils as well, such as the various Councils of Carthage in which all the bishops of North Africa were to attend. During the Middle Ages, some councils were legatine, called by a papal legate rather than the pope or bishop. Synods Synods in Eastern Catholic Churches are similar to synods in Orthodox churches in that they are the primary vehicle for election of bishops and establishment of inter-diocesan ecclesiastical laws. The term synod in Latin Church canon law, however, refers to meetings of a representative, thematic, non-legislative (advisory) or mixed nature or in some other way do not meet the qualifications of a "council." There are various types. Diocesan synods are irregular meetings of the clergy and laity of a particular church summoned by the diocesan bishop (or other prelate if the particular church is not a diocese) to deliberate on legislative matters. Only the diocesan bishop holds legislative authority; the other members of the diocesan synod act only in an advisory capacity. Those who must be invited to a diocesan synod by law are any coadjutor or auxiliary bishops, the vicars general and episcopal, the officialis, the vicars forane plus an additional priest from each vicariate forane, the presbyterial council, canons of the cathedral chapter (if there is one), the rector of the seminary, some of the superiors of religious houses in the diocese, and members of the laity chosen by the diocesan pastoral council, though the diocesan bishop can invite others to attend at his own initiative. (can. 463) Episcopal conferences National Episcopal Conferences are another development of the Second Vatican Council. They are permanent bodies consisting of all the Latin rite bishops of a nation and those equivalent to diocesan bishops in law (i.e. territorial abbots). Bishops of other sui juris churches and papal nuncios are not members