If you specify filter names for each folio in the Folio Producer Organizer, the filter options appear in a drop-down menu in the viewer library.
For example, if you create different editions of the same folio for different languages, you can let your customers view folios only for one language and hide the folios for other languages. Or, you can create filters that display only the folios for a specific time period, such as “2011 Issues” and “2012 Issues.”
You can create only one level of filters. However, your customers can select multiple options in the drop-down list. For example, customers can display French and German folios and hide English and Spanish folios.
Filters are supported only on the iPad.