When a DITA information set is transformed into a book, the deliverable is a self-contained. Its navigation devices (page numbers, TOC, index, cross-references) are constructed from the DITA source. Likewise, when a compiled Help deliverable is created, the navigation is constructed. However, a compiled Help file is typically read in a viewing program that allows full text searching; that form of navigation is provided by the viewing engine, and is not derived from the DITA source.

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