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The two characters commonly used for this purpose are the hyphen ("-") and the underscore ("_"); e.g., the two-word name "two words" would be represented as "two-words" or "two_words". The hyphen is used by nearly all programmers writing COBOL (1959), Forth (1970), and Lisp (1958); it is also common in Unix for commands and packages, and is ...
The (freestanding) underscore character, _, also called a low line, or low dash, originally appeared on the typewriter so that underscores could be typed. To produce an underscored word, the word was typed, the typewriter carriage was moved back to the beginning of the word, and the word was overtyped with the underscore character.
Depending on local conventions, underscores (underlines) may be used on manuscripts (and historically on typescripts) to indicate the special typefaces to be used: [4] [5] single dashed underline for stet, 'let it stand', proof-reading mark cancelled. single straight underline for italic type; single wavy underline for bold type
If you’ve ever found yourself confused about the difference between a dash and a hyphen, and when to use a hyphen, you’re far from alone. Now that you’ve got that rule straightened out ...
The hyphen ‐ is a punctuation mark used to join words and to separate syllables of a single word. The use of hyphens is called hyphenation. [1]The hyphen is sometimes confused with dashes (en dash –, em dash — and others), which are wider, or with the minus sign −, which is also wider and usually drawn a little higher to match the crossbar in the plus sign +.
A Unicode character is assigned a unique Name (na). [1] The name is composed of uppercase letters A–Z, digits 0–9, hyphen-minus and space.Some sequences are excluded: names beginning with a space or hyphen, names ending with a space or hyphen, repeated spaces or hyphens, and space after hyphen are not allowed.
The rules about hyphens and en dashes arise from printers, as a way of providing a standardized working format for their trade, but have no real intellectual significance, In the typewriter days, they provided a clear difference between informal composition on even the most sophisticate machines, and the formal composition a printer could ...
In the entire section, however, including the phrase "left-to-right", the hyphens are all ASCII hyphens, i.e., in Unicode terminology, hyphen-minuses. In the Wikipedia section Hyphen § Hyphen-minuses I have flagged with {{ cn }} both the claim that U+2010 is the form "used in professional type-setting" and the related claim that "wherever ...