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609
SECTION 8.4 Anno ta tions
BIT POSITION NAME MEANING
4 NoZoom (PDF 1.3) If set, do not scale the annotation’s appearance to match the magni-
fication of the page. The location of the annotation on the page (defined by
the upper-left corner of its annotation rectangle) remains fixed, regardless of
the page magnification. See below for further discussion.
5 NoRotate (PDF 1.3) If set, do not rotate the annotation’s appearance to match the rota-
tion of the page. The upper-left corner of the annotation rectangle remains in
a fixed location on the page, regardless of the page rotation. See below for fur-
ther discussion.
6 NoView (PDF 1.3) If set, do not display the annotation on the screen or allow it to
interact with the user. The annotation may be printed (depending on the
setting of the Print flag) but should be considered hidden for purposes of on-
screen display and user interaction.
7 ReadOnly (PDF 1.3) If set, do not allow the annotation to interact with the user. The
annotation may be displayed or printed (depending on the settings of the
NoView and Print flags) but should not respond to mouse clicks or change its
appearance in response to mouse motions.
Note: This flag is ignored for widget annotations; its function is subsumed by the
ReadOnly flag of the associated form field (see Table 8.70 on page 676).
8 Locked (PDF 1.4) If set, do not allow the annotation to be deleted or its properties (in-
cluding position and size) to be modified by the user. However, this flag does
not restrict changes to the annotation’s contents, such as the value of a form
field. (See implementation note 84 in Appendix H.)
9 ToggleNoView (PDF 1.5) If set, invert the interpretation of the NoView flag for certain
events. A typical use is to have an annotation that appears only when a mouse
cursor is held over it; see implementation note 85 in Appendix H.
10 LockedContents (PDF 1.7) If set, do not allow the contents of the annotation to be modified by
the user. This flag does not restrict deletion of the annotation or changes to
other annotation properties, such as position and size.
If the NoZoom flag is set, the annotation always maintains the same fixed size on
the screen and is unaffected by the magnification level at which the page itself is
displayed. Similarly, if the NoRotate flag is set, the annotation retains its original
orientation on the screen when the page is rotated (by changing the Rotate entry
in the page object; see “Page Objects” on page 144).
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