Floridaâs tract of coral reefs has the honor of being the third-largest barrier reef ecosystem in the world. However, it could soon be a thing of the past, as the acidification of the oceanâs water is dissolving it faster than it can rebuild.
index (plural indexes or indices) 1  An alphabetical listing of items and their location. The index of a book lists words or expressions and the pages of the book upon which they are to be found. 2  The index finger; the forefinger. 3  A movable finger on a gauge, scale, etc.
Subscript and Index. What is the difference between a subscript and an index? An index is defined with it's associated table using the INDEXED BY phrase. It is a storage area generated by the compiler. It is a register item that exists outside the program's working storage. It is 4 bytes in length.