CHAPTER 8
630
Interactive Features
TABLE 8.27 Line ending styles
NAME
APPEARANCE
DESCRIPTION
Square
Circle
Diamond
OpenArrow
ClosedArrow
A square filled with the annotation’s interior color, if any
A circle filled with the annotation’s interior color, if any
A diamond shape filled with the annotation’s interior color, if any
Two short lines meeting in an acute angle to form an open arrowhead
Two short lines meeting in an acute angle as in the
OpenArrow
style (see
above) and connected by a third line to form a triangular closed arrowhead
filled with the annotation’s interior color, if any
No line ending
(PDF 1.5)
A short line at the endpoint perpendicular to the line itself
(PDF 1.5)
Two short lines in the reverse direction from
OpenArrow
(PDF 1.5)
A triangular closed arrowhead in the reverse direction from
ClosedArrow
None
Butt
ROpenArrow
RClosedArrow
Slash
(PDF 1.6)
A short line at the endpoint approximately 30 degrees clockwise
from perpendicular to the line itself
Square and Circle Annotations
Square
and
circle annotations (PDF 1.3)
display, respectively, a rectangle or an
ellipse on the page. When opened, they display a pop-up window containing the
text of the associated note. The rectangle or ellipse is inscribed within the annota-
tion rectangle defined by the annotation dictionary’s
Rect
entry (see Table 8.15 on
points. Despite the names
square
and
circle,
the width and height of the annota-
tion rectangle need not be equal. Table 8.28 shows the annotation dictionary en-
tries specific to these types of annotations.