Yes Value in Other ID Start Unicode Property

Yes is the value assigned to characters that are explicitly permitted to begin an identifier in programming languages and data formats, even though they are not classified as standard letters or numbers. These characters, which include certain symbols like the commercial at sign (@) or the dollar sign ($), are recognized as valid starting points for names, variables, or other user-defined tokens in contexts that adopt this specific allowance. The presence of this value signals that a character, while not a typical alphabetic or numeric character, still meets the syntactic requirement for an identifier’s first position, thereby enabling broader naming conventions in technical systems without relying on conventional letter categories. This designation helps parsers and compilers distinguish such characters from those that are entirely forbidden or only allowed later in an identifier.