S E C T I O N H .3
1117
Implementation Notes
109. Acrobat viewers earlier than version 3.0 report the following error when
encountering an action of type
Hide
: “The plug-in needed for this
Hide
ac-
tion is not available.”
110. In Acrobat viewers, the change in an annotation’s Hidden flag as a result of
a hide action is temporary in that the user can subsequently close the doc-
ument without being prompted to save changes and the effect of the hide
action is lost. However, if the user explicitly saves the document before
closing, such changes
are
saved and thus become permanent.
111. Acrobat viewers earlier than version 3.0 report the following error when
encountering an action of type
Named
: “The plug-in needed for this
Named
action is not available.”
112. Acrobat viewers extend the list of named actions in Table 8.61 to include
most of the menu item names available in the viewer.
113. Acrobat viewers may insert additional entries in the
DR
resource dictio-
nary, such as
Encoding
, as a convenience for keeping track of objects being
used to construct form fields. Such objects are not actually resources and
are not referenced from the appearance stream.
114. In Acrobat, markup annotations can also make use of the resources in the
DR
dictionary.
115. Acrobat 6.0 recognizes only the stream value of the
XFA
entry; Acrobat
6.02 and later recognize both stream and array values.
116. Beginning in Acrobat 3.0, partial field names cannot contain a period.
117. Acrobat 6.0 and later support Unicode encoding of field names. Versions
earlier than Acrobat 6.0 do not support Unicode encoding of field names.