Abbreviations, acronyms, anomyms, contractions, initials, nicknames, short forms, slang shortcuts, signs and symbols; Airlines of the world; Astronomical constellations, stars, and symbols; Automatic data-processing abbreviations for zip-coded mail; Chemical element symbols, atomic numbers, and discovery data; Civil and military time systems compared; Diacritial and punctuation marks; Greek alphabet; International civil aircraft markings; International radio alphabet and code; Numbered abbreviations; Numeration; Proofreader's marks; Railroads of the world; Roman numerals.