: Breaking large concepts into granular subcategories that provide a "meta-presentation" of the book's contents.

An index of EPUB books is a catalog or database that systematically organizes and lists digital books in EPUB format. The index provides a structured way to access and retrieve books, making it easier for readers to find and access the content they need. The index can include metadata such as book titles, authors, publication dates, genres, and keywords, allowing for efficient searching and filtering.

Searching specifically for an "index of " rather than PDF or MOBI is a game-changer.