This interface implies the ISPFFile interface definition and is realized by the SPFAlternateRendition class definition. This interface is instantiated only if a merged PDF file is related to a parent object using ISPFMergedRenditionsComposition through the SPFMergedRenditionComposition relationship definition where End1 is ISPFMergedRenditionsComposition (the parent object) and End2 is ISPFMergedRendition (the merged PDF file).