👉 Under-comment, also known as a "sub-comment," is a type of comment that appears in documents or other written materials to provide additional information or clarification. It can be used by authors or editors to explain certain concepts or details not explicitly stated throughout the text. For example, a book review might include an under-comment section where the author elaborates on specific aspects of the book's content and provides examples that support their argument. This type of comment helps readers understand the depth and breadth of the subject
