The Navigator feature in LibreOffice Writer is a mapper for the document components. Navigator helps authors to navigate easily into a chosen page based on the component of the document. The main usage of Navigator is to map subtitles/headings inside a document, so an author can go to any subtitle easily and go back easily too. This is very effective in a large document while it has very complex subtitles structure. But Navigator can map another components, such as images, tables, hyperlinks, and some others.