Indexed refers to an index. It is a comprehensive catalog, generally prearranged alphabetically, of the precise information in a journal, periodical or anything i.e. Whether a book, bulletin, file or multimedia compilation. It is planned to help the person who reads find information speedily and without difficulty. If at all possible, a catalog is not just a list of the main terms in a periodical, but a prearranged map of its filling, together with cross-references, combining concepts, and other helpful scholar analysis. In books, indexes are by and large located near the conclusion which is usually termed as "BoB" or back-of-book indexing. They harmonize the table of contents by facilitating admittance to information by subject, while contents scheduling enables admittance through wide groups arranged in the category they occur.