CHAPTER 10
932
Document Interchange
Column Attributes
The attributes described in Table 10.33 apply only to the grouping elements
Art
,
Sect
, and
Div
(see “Grouping Elements” on page 899). They are used when the
content in the grouping element is divided into columns.
TABLE 10.33 Standard column attributes
KEY
TYPE
VALUE
ColumnCount
integer
number or
array
(Optional; not inheritable; PDF 1.6)
The number of columns in the content of the
grouping element. Default value: 1.
(Optional; not inheritable; PDF 1.6)
The desired space between adjacent col-
umns, measured in default user space units in the inline-progression direction.
If the value is a number, it specifies the space between all columns. If the value is
an array, it should contain
ColumnCount
- 1 numbers, representing the space be-
tween the first and second columns, the second and third columns, and so on,
respectively. If there are fewer than
ColumnCount
- 1 numbers, the last element
specifies all remaining spaces; excess array elements are ignored.
(Optional; not inheritable; PDF 1.6)
The desired width of the columns, measured
in default user space units in the inline-progression direction. If the value is a
number, it specifies the width of all columns. If the value is an array, it should
contain
ColumnCount
numbers, representing the width of each column, in or-
der. If there are fewer than
ColumnCount
numbers, the last element specifies all
remaining widths; excess array elements are ignored.
ColumnGap
ColumnWidths
number or
array
List Attribute
The
ListNumbering
attribute, described in Table 10.34, is carried by an
L
(List)
element, but controls the interpretation of the
Lbl
(Label) elements within the
list’s
LI
(List item) elements (see “List Elements” on page 902). This attribute is de-
fined in attribute objects whose
O
(owner) entry has the value
List
(or is one of
the format-specific owner names listed in Table 10.28 on page 914).