Adobe Acrobat SDK
Implementation Notes
Adobe® Supplement to the ISO 32000
Implementation Notes to the PDF Reference, sixth edition 118
The document is viewed with Acrobat 9.
Widget order:
When
Tabs
is set to
W
, widgets are visited in the order in which they appear in the
Annots
array, and then other annotation types are visited in row order.
All other tab orders (row, column, structure, and annotation):
Annotations are visited as
specified by the PDF specification.
No
Tabs
entry:
Widget annotations are ordered as they appear in the
Annots
array, followed by
other annotation types ordered by rows.
●
The document is viewed with Acrobat 6, 7, or 8.
Tabs
entry provided:
Tab order is as specified by the
Tabs
entry. These versions support only the
column, row, and structure order settings.
No
Tabs
entry or the
Tabs
entry value not recognized:
Widgets are visited in the order in which
they appear in the
Annots
array, and then other annotation types are visited in row order.
●
For a document viewed with Acrobat 5 or earlier, widgets are visited in the order in which they appear
in the
Annots
array, and then other annotation types are visited in row order.
Reordering of annotations
For documents that have a
Tabs
entry, Acrobat 6.0 and later reorder annotations in the
Annots
array to
match the order described in
“Interaction between accessibility preference and annotation tab order” on
page 117
. The tab order for widgets and other annotation types is then preserved when the document is
opened by earlier viewers.
8.4.1 Annotation Dictionaries
78. Acrobat viewers update the annotation dictionary’s
M
entry only for text annotations.
79. Acrobat 2.0 and 2.1 viewers ignore the annotation dictionary’s
AP
and
AS
entries.
80. All versions of Acrobat through 6.0 ignore the
AP
entry when drawing the appearance of link
annotations.
81. Acrobat viewers ignore the horizontal and vertical corner radii in the annotation dictionary’s
Border
entry; the border is always drawn with square corners.
82. Acrobat viewers support a maximum of ten elements in the dash array of the annotation dictionary’s
Border
entry.
8.4.2 Annotation Flags
83. Acrobat viewers earlier than version 3.0 ignore an annotation’s Hidden and Print flags. Annotations that
should be hidden are shown; annotations that should be printed are not printed. Acrobat 3.0 ignores
the Print flag for text and link annotations.
84. Acrobat 5.0 obeys the Locked flag only for widget annotations. In Acrobat 6.0, markup annotations
support it as well.
85. In Acrobat 6.0, the ToggleNoView flag is applicable to mouse-over and selection events.
