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Indexers compile organized lists, called indexes, that help people locate information in a text or body of work. Indexes are like "road maps" that help users find desired information. Just as a map allows travelers to select the most direct route to a destination, indexes should provide users with a basis for selecting relevant information and screening out that which is unwanted. They provide an alphabetized collection of important words and phrases that appear throughout the text, along with page numbers where those words and phrases can be located.