Indexing:

Indexing is the process of creating indexes for record collections. Having indexes allows researchers to more quickly find records for specific individuals; without them, researchers might have to look through hundreds or thousands of records to locate an individual record.

Indexes are designed to help the reader find information quickly and easily. An index is a concise, cohesive, and well-interconnected map to the text. It is an essential tool to accessing and revisiting content. It provides references to the locations of important information and deliberately excludes references to irrelevant information.