noun
supplementary symbol
Technical term for symbols such as numbers, punctuation marks, and other non-alphabetic characters used alongside main text.
補助符号には、数字や句読点などが含まれる。
Supplementary symbols include numbers, punctuation marks, and the like.
Compound of 補助 (hojo, 'auxiliary, supplementary') and 符号 (fugō, 'symbol, code').