S E C T I O N H .3
1115
Implementation Notes
8.4.5, “Annotation Types” (Polygon and Polyline Annotations)
91. The PDF Reference fifth edition (PDF 1.6) erroneously omitted the
IT
en-
try from the additional entries specific to a polygon or polyline annota-
tion. This entry specifies the intent of the annotation. (see Table 8.29).
8.4.5, “Annotation Types” (Text Markup Annotations)
92. In Acrobat 4.0 and later versions, the text is oriented with respect to the
vertex with the smallest
y
value (or the leftmost of those, if there are two
such vertices) and the next vertex in a counterclockwise direction, regard-
less of whether these are the first two points in the
QuadPoints
array.
8.4.5, “Annotation Types” (Ink Annotations)
93. Acrobat viewers always use straight lines to connect the points along each
path.
8.4.5, “Annotation Types” (File Attachment Annotations)
94. Acrobat 7.0 and earlier viewers only support file attachment annotations
whose referenced file is embedded in the PDF document.
95. Acrobat 7.0 does not include a
Desc
entry in file specifications for file at-
tachment annotations and ignores them if they are present.
96. PDF 1.7 added the ability to apply markup annotations to 3D views. Al-
though Acrobat 7.0 officially supports PDF 1.6, Acrobat 7.0.7 also sup-
ports this feature.
8.4.5, “Annotation Types” (Watermark Annotations)
97. Watermark annotations are handled correctly only when Acrobat
n-up
printing is selected. Selecting
n-up
from within the printer driver does not
produce correct results.
8.5.2, “Trigger Events”
98. In PDF 1.2, the additional-actions dictionary could contain entries named
NP
(next page),
PP
(previous page),
FP
(first page), and
LP
(last page). The
actions associated with these entries were never implemented; beginning
with PDF 1.3, these entries are obsolete and should be ignored.
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