To provide the user with an efficient means of tracing information.
To identify and locate relevant information.
To exclude passing mentions that offer nothing significant.
To analyse concepts to produce a series of headings.
To allow user to establish quickly presence or absence of a topic in an unfamiliar
work.
To allow user to retrieve information on a remembered item in a known or partially-known
work.
To allow user to identify appropriate documents in a collection.
To indicate relationships between concepts.
To group together information on subjects scattered by the arrangement of the document.
To synthesize headings and subheadings into entries.
To direct users seeking information under terms not chosen for the index headings
to terms that have been chosen as index headings, by means of ‘see’ cross-references.
To arrange entries into a systematic and helpful order.