SECTION 10.6
859
Logical Structure
KEY
TYPE
VALUE
K
(various)
(Optional)
The children of this structure element. The value of this entry
may be one of the following objects or an array consisting of one or more
of the following objects:
•
A structure element dictionary denoting another structure element
•
An integer marked-content identifier denoting a marked-content
sequence
•
A marked-content
sequence
reference dictionary denoting a marked-content
•
An object reference dictionary denoting a PDF object
Each of these objects other than the first (structure element dictionary)
is considered to be a
content item;
see Section 10.6.3, “Structure Con-
Note:
If the value of
K
is a dictionary containing no
Type
entry, it is as-
sumed to be a structure element dictionary.
A
(various)
(Optional)
A single attribute object or array of attribute objects associat-
ed with this structure element. Each attribute object is either a dictio-
nary or a stream. If the value of this entry is an array, each attribute
object in the array may be followed by an integer representing its revi-
sion number (see Section 10.6.4, “Structure Attributes,” and “Attribute
(Optional)
An attribute class name or array of class names associated
with this structure element. If the value of this entry is an array, each
class name in the array may be followed by an integer representing its re-
vision number (see “Attribute Classes” on page 873 and “Attribute Revi-
Note:
If both the
A
and
C
entries are present and a given attribute is speci-
fied by both, the one specified by the
A
entry takes precedence.
C
name or array
R
integer
(Optional)
The current revision number of this structure element (see
negative integer. Default value: 0.
(Optional)
The title of the structure element, a text string representing it
in human-readable form. The title should characterize the specific struc-
ture element, such as
Chapter 1
, rather than merely a generic element
type, such as
Chapter
.
T
text string