their findings to the pope for his final decision of appointment. Eastern Metropolitans in patriarchal or major archiepiscopal churches have a level of authority similar to that of Latin metropolitans, subject to the specific laws and customs of their sui iuris church. Eastern metropolitans who head a metropolitan sui iuris church have much greater authority within their church, although it is less than that of a major archbishop or patriarch. All metropolitans have the title of Archbishop, and the metropolitan see is usually referred to as an archdiocese or archeparchy, a title held not only by the 553 metropolitan sees but also by 77 other sees. An exception is the metropolitan Diocese of Rome. Archbishops The title of archbishop is held not only by bishops who head metropolitan sees, but also by those who head archdioceses that are not metropolitan sees (most of these are in Europe and the Levant). In addition, it is held by certain other bishops, referred to as "Titular Archbishops" (see "Other Bishops" below) who have been given no-longer-residential archdioceses as their titular sees—many of these in administrative or diplomatic posts, for instance as papal nuncios or secretaries of curial congregations. The bishop of a non-archiepiscopal see may be given the personal title of archbishop without also elevating his see (such a bishop is known as an archbishop ad personam), though this practice has seen significantly reduced usage since the Second Vatican Council. Diocesan bishops The bishop or eparch of a see, even if he does not also hold a title such as archbishop, metropolitan, major archbishop, patriarch or pope, is the centre of unity for his diocese or eparchy, and, as a member of the College of Bishops, shares in responsibility for governance of the whole Church (cf. Catechism of the Catholic Church, 886). Within the Catholic Church the following posts have similarities to that of a diocesan bishop, but are not necessarily held by a bishop. Equivalents of diocesan bishops in law Canon 368 of the 1983 Code of Canon Law lists five Latin Church jurisdictional areas that are considered equivalent to a diocese. These are headed by: A Territorial Prelate, formerly called a Prelate nullius dioceseos (of no diocese), in charge of a geographical area that has not yet been raised to the level of diocese A Territorial Abbot, in charge of an area, which in mission countries can be quite vast, associated