This International Standard specifies the essential dimensions of projector slides of the preferred international sizes 3 cm × 3 cm, 5 cm × 5 cm and 7 cm × 7 cm, and of the title strip. It does not apply to slides for specialized use, for example in television. This International Standard is intended to facilitate the manufacture, use, and international interchangeability of projector slides and to minimize the proliferation of sizes that would interfere with these objectives. Apart from the nominal 13 mm × 17 mm picture area (110 format film), this International Standard does not apply to the so-called "sub-miniature" slides smaller than 3 cm × 3 cm.