The objective of this Standard is to define terms and establish classifications, characteristics and marking requirements for ceramic tiles of the best commercial quality (first quality). This Standard is not applicable to tiles made by other than normal processes of extrusion or dry pressing. It is not applicable to decorative accessories or trim such as edges, corners, skirting, capping, coves, beads, steps, curved tiles and other accessory pieces or mosaics (i.e. any piece that can fit into a square, the side of which is less than 7 cm).