tertiary — A tertiary word or phrase in an index term
tertiary ::= (text | | | | | | | | | | | | | | | | )*
tertiary element contains a third-level word
or phrase in an
indexterm. The text of a
tertiary term is less significant than the
secondary terms for
sorting and display purposes.
DocBook does not define any additional levels. You cannot use
indexterms to construct indexes with more than three
levels without extending the schema.
indexterms, you can only have one primary,
secondary, and tertiary term. If you want to index multiple tertiary
terms for the same primary and secondary, you must repeat the primary
and secondary in another
indexterm. You cannot place
tertiarys in the same primary.
Suppressed. This element provides data for processing but is not rendered in the primary flow of text.