PageMode | 
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PageMode( mode ) => defines page viewing mode for PDF Reader.
 
      Mode (numerical) : viewing mode (using registered PDF reader) can be as follows :
| 
 0 (none) 
 | 
 Use default PDF reader mode 
 | 
| 
 1 (outline) 
 | 
 Show document Outline page 
 | 
| 
 2 (Thumbnail) 
 | 
 Show pages thumbnails 
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| 
 3 (Full Screen) 
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 Show document in Full Screen mode 
 | 
this method can be called anywhere between Create() and EndDoc() calls.