Literary notes about underscore (AI summary)
In literature, the term "underscore" is employed both as a literal mark and as a metaphorical device. In certain texts, it functions as a typographic tool to indicate italics or to emphasize a particular word or phrase, as noted when an author uses an underscore to denote emphasis in a passage [1][2][3]. In other contexts, it signals textual corrections or formatting details—such as the use of a gray or dashed underscore to point out amendments [4][5][6]—and even extends to technical notations like marking subscripted numbers within formulas [7]. Additionally, the word appears in narrative and rhetorical contexts where it enhances dramatic moments or highlights significant ideas [8][9][10], and is used pedagogically to guide readers through grammatical or compositional structures [11][12][13].