If you are looking for a specific subject or section in the book you can simply locate it through the book index instead of looking for it inside the whole book.
More easier, some programs convert the book index to links if it is a digital book(PDF). When you click on a word or a page number in the index it takes you to the requested page automatically, like the "PDF Index Generator" software.
index is a part of the book that tells you were every thing in the book is
index is a part of the book that tells you were every thing in the book is
In the index
An index is important because rather than having to flip through an entire book to find a single answer, you can look in the book's index and it will tell you the page where a specific topic is reviewed/discussed.
There may an epilog or an index...
index
Two parts of a book that give you an organized overview of the book, section by section, are the Table of Contents and the Index.
The index or the table of contents.
an index is a thing in the back of a book. The END!
The blurb
A card catalog helps a person find a book in a library. A books index helps a person find a part in their book.
And index is in the back of a story or book.