U+3010 "【" Left Black Lenticular Bracket Unicode Character

U+3010 "【" Left Black Lenticular Bracket is a typographic symbol primarily used in East Asian scripts, most notably in Chinese, Japanese, and Korean text, to enclose or highlight supplementary information, such as titles, headings, or annotations. Its distinctive shape features heavy, rounded ends that resemble a black lentil or pill, giving it a bold and visually clear appearance compared to standard brackets. In practice, it often pairs with its counterpart U+3011 "】" Right Black Lenticular Bracket to form sets that mark off comments, quotations, or metadata in contexts like dictionaries, legal documents, or digital formatting, and it is also commonly seen in manga or other media for emphasis or stylistic effect.