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Chapter 9. Multimedia Features > Alternate Presentations

9.4. Alternate Presentations

Beginning with PDF 1.4, a PDF document may contain alternate presentations, which specify alternate ways in which the document may be viewed. The optional AlternatePresentations entry (PDF 1.4) in a document's name dictionary (see Table 3.28) contains a name tree that maps name strings to the alternate presentations available for the document.

Note

Since PDF viewers are not required to support alternate presentations, authors of documents containing alternate presentations should define the files such that something useful and meaningful can be displayed and printed. For example, if the document contains an alternate presentation slideshow of a sequence of photographs, the photographs should be viewable in a static form by viewers that are not capable of playing the slideshow.



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