This class represents the file specification dictionary. This is definitively detailed in:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; page 97.

This class is always an indirect object because RichMediaActivationElement.EntryScripts, RichMediaInstanceElement.EntryAsset and StructureTreeRootElement.EntryPronunciationLexicon require it to be so.

System.Object
    WebSupergoo.ABCpdf13.Elements.Element
       WebSupergoo.ABCpdf13.Elements.FileSpecificationElement
          WebSupergoo.ABCpdf13.Elements.FullFileSpecificationElement
          WebSupergoo.ABCpdf13.Elements.StringFileSpecificationElement