Does FOP 2.1 support ViewerPreferences?

Question

I\'m using FOP 2.1 and am trying to set ViewerPreferences, e.g. DisplayDocTitle -> true.

I\'m trying (from this question

Answer 1

As supplement to @lfurini's excellent finding, here are some more thing that can be done that way easily, tested with fop 2.1, but could also work from 2.0:, remove the comments from the relevant sections to try:

  
    
    

    
    
    

    
    
      true
    
  
  
    
      
        
        Sample Document title
      
    
  

Details of possible values can be looked up in the pdf specification (from page 139 in this v1.7 version, TABLE 3.25 Entries in the catalog dictionary), take care not to use values that would normally be set by fop anyway, restrict yourself to viewer/reader relevant stuff.