Literary notes about hallmark (AI summary)
In literature, the word "hallmark" functions as a powerful metaphor for a distinctive quality or attribute that identifies and defines its subject. It can refer to an actual marked signature on an object, as when an angel marks a teapot [1], or evoke the inherent quality of character, like the rich tone that becomes the hallmark of gentility [2]. Authors extend the term to nature and art as well, suggesting that every leaf or cloud carries its own creative hallmark [3]. Moreover, "hallmark" is used to denote a signature trait of entire movements or genres—for instance, identifying the superficiality that marks the American novel [4].