There is so much information, and so many ways of going through the information, that getting lost is a common occurrence. Folio's electronic versions of bookmarks, headings, footers, and highlighters are also helpful and work much as they would in traditional books or magazines. Folio also indexes every word in the infobases it creates. An infobase is structured as a set of levels. Levels provide hierarchical organization for instructional materials as well as aid in the design and layout of your information.
Levels contain structurally related blocks of information.
For instance, all the chapter titles in a book should be tagged at the same level. Then, when Folio creates a table of contents all the chapters can be formatted the same. Folio also allows queries to be applied to only certain levels. A search could, for example, be applied only to chapter titles or main headings. The entries in the toc are linked to the appropriate section of the infobase automatically.