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                                                  666
       CHAPTER 8                                                             Interactive Features




                        TABLE 8.60 Additional entries specific to a hide action
KEY   TYPE              VALUE

S     name              (Required) The type of action that this dictionary describes; must be Hide for a hide
                        action.

T     dictionary,       (Required) The annotation or annotations to be hidden or shown, specified in any
      text string, or   of the following forms:
      array
                        • An indirect reference to an annotation dictionary
                        • A text string giving the fully qualified field name of an interactive form field
                          whose associated widget annotation or annotations are to be affected (see “Field
                          Names” on page 676)
                        • An array of such dictionaries or text strings
H     boolean           (Optional) A flag indicating whether to hide the annotation (true) or show it (false).
                        Default value: true.


       Named Actions

       Table 8.61 lists several named actions (PDF 1.2) that PDF viewer applications are
       expected to support; further names may be added in the future. (See implementa-
       tion notes 111 and 112 in Appendix H.)

                                      TABLE 8.61 Named actions
       NAME                  ACTION

       NextPage              Go to the next page of the document.

       PrevPage              Go to the previous page of the document.

       FirstPage             Go to the first page of the document.

       LastPage              Go to the last page of the document.

       Note: Viewer applications may support additional, nonstandard named actions, but
       any document using them is not portable. If the viewer encounters a named action
       that is inappropriate for a viewing platform, or if the viewer does not recognize the
       name, it should take no action.

       Table 8.62 shows the action dictionary entries specific to named actions.

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