Did You Know? Underscore Symbol Was Originally Used to Underline Text on Typewriters
Underscore is a symbol which we commonly use for showing visual spacing within a sequence of characters, where a whitespace character is not permitted like filename, email address, etc. But, did you know that the symbol was used to underline text on typewriters? Yes, the symbol underscore ( _ ), also called underline, low line or low dash, was originally used on the typewriter to underline words. To produce an underlined word, the word was typed and then the typewriter carriage was moved back to the beginning of the word, and the word was overtyped with the underscore character.