SECTION 10.7
911
Tagged PDF
TABLE 10.26 Standard structure types for Ruby and Warichu elements (PDF
1.5)
STRUCTURE TYPE
DESCRIPTION
Ruby
(Ruby) The wrapper around the entire ruby assembly. It contains one
RB
element followed
by either an
RT
element or a three-element group consisting of
RP
,
RT
, and
RP
.
Ruby
ele-
ments and their content elements may not break across multiple lines.
(Ruby base text) The full-size text to which the ruby annotation is applied.
RB
can contain
text, other inline elements, or a mixture of both. It may have the
RubyAlign
attribute.
(Ruby annotation text) The smaller-size text that is placed adjacent to the ruby base text. It
can contain text, other inline elements, or a mixture of both. It may have the
RubyAlign
and
RubyPosition
attributes.
(Ruby punctuation) Punctuation surrounding the ruby annotation text. It us used only
when a ruby annotation cannot be properly formatted in a ruby style and instead is for-
matted as a normal comment, or when it is formatted as a warichu. It contains text (usual-
ly a single open or close parenthesis or similar bracketing character).
(Warichu) The wrapper around the entire warichu assembly. It may contain a three-ele-
ment group consisting of
WP
,
WT
, and
WP
. Warichu elements (and their content elements)
may wrap across multiple lines, according to the warichu breaking rules described in the
Japanese Industrial Standard (JIS) X 4051-1995.
(Warichu text) The smaller-size text of a warichu comment that is formatted into two lines
and placed between surrounding
WP
elements.
(Warichu punctuation) The punctuation that surrounds the
WT
text. It contains text (usu-
ally a single open or close parenthesis or similar bracketing character). According to JIS X
4051-1995, the parentheses surrounding a warichu may be converted to a space (nominal-
ly 1/4 EM in width) at the discretion of the formatter.
RB
RT
RP
Warichu
WT
WP
Illustration Elements
Tagged PDF defines an
illustration element
as any structure element whose struc-
ture type (after role mapping, if any) is one of those listed in Table 10.27. The il-
lustration’s content must consist of one or more complete graphics objects. It may
not appear between the
BT
and
ET
operators delimiting a text object (see Section
marked clipping sequence, as defined in Section 10.5.2, “Marked Content and
marked-content tag
Clip
.