+An index is a structured [Pointer](/wiki/Pointer) to information, organizing entries for efficient retrieval. It often presents a sorted [List](/wiki/List) of terms or concepts, each directing users to specific locations within a larger body of work. This fundamental tool facilitates navigation and access across diverse information systems.
+## See also
+- [Table of Contents](/wiki/Table_of_Contents)
+- [Catalog](/wiki/Catalog)
+- [Database](/wiki/Database)
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