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chemical notation, choreography, citation, credit, footnote, mathematical notation, mention, postscript, ps, quotation

accidental, bar, binary digit, binary notation, cancel, chemical notation, choreography, clef, decimal digit, decimal notation, diophantus, double bar, double flat, double sharp, exponent, fixed-point number, flat, float, floating-point number, george guess, hexadecimal notation, index, infix notation, labanotation, ledger line, leger line, lukasiewicz notation, mathematical notation, measure, musical notation, musical note, musical time signature, natural, notate, note, number representation system, number system, numeration system, octal digit, octal notation, parenthesis-free notation, polish notation, poste restante, postfix notation, power, prefix notation, rest, reverse polish notation, roman numeral, segno, sequoya, sequoyah, sexadecimal notation, sforzando, sharp, suffix notation, system of numeration, tablature, time signature, tone, transcriber

comment, commentary, symbolic representation, writing

annotation, notational system