Section II of Chapter V, Arrangement of the Sanctuary for the Sacred Synaxis, will include a look at the altar (GIRM 296-308), the ambo (309), and the chair (310). In this section’s introductory comments, the “sanctuary” is defined somewhat differently from the way other Christians see it:
295. The sanctuary is the place where the altar stands, the Word of God is proclaimed, and the Priest, the Deacon, and the other ministers exercise their functions. It should be appropriately marked off from the body of the church either by its being somewhat elevated or by a particular structure and ornamentation. It should, moreover, be large enough to allow the Eucharist to be easily celebrated and seen.[Inter Oecumenici 91]
Visibility to the assembly remains important.