diocese. In England, however (except as regards Salisbury and Durham), this custom has never obtained, the two archbishops having, from time immemorial, taken charge of the vacant dioceses in their respective provinces. When, however, either of the sees of Canterbury or York is vacant the chapters of those churches take charge, not only of the diocese, but of the province as well, and incidentally, therefore, of any of the dioceses of the province that may be vacant at the same time. Functions of a cathedral The role of the cathedral is chiefly to serve God in the community, through its hierarchical and organisational position in the church structure. The building itself, by its physical presence, symbolises both the glory of God and of the church. A cathedral, its bishop and dignitaries have traditional functions that are mostly religious in nature, but may also be closely associated with the civil and communal life of the city and region. Symbolic functions of the building The cathedral is frequently the most imposing building, and one of the most ancient buildings in its town. The great size and splendor of the cathedral may be out of all proportion to the town itself. The money and talents expended on the building are seen as honoring God, and may also demonstrate both the devotion and the status of the patrons. Cathedrals are very often oriented east/west, so that the worshipers look towards the rising sun, symbolizing the Risen Christ. The architectural form of the building most frequently has the ground plan of a cross. This form is both functional and symbolic, its symbolism referring to the cross on which Jesus was crucified. The form is liturgically functional as it allows the building to be divided into sections where different activities take place, or that are occupied by different people, such as the clergy, the choir and the laity. The main body of the building, making the longer arm of the cross, is called the nave, and is where worshipers congregate; the term is from the Latin word for ship. The cathedral is symbolically a ship bearing the people of God through the storms of life. The nave is also used for major processions, which gather or enter at the furthest door (liturgically generally called the West Door). The aisles on each side of the nave facilitate the movement of people within the building, without disrupting worshipers