CHAPTER 10
954
Document Interchange
KEY
TYPE
VALUE
ID
byte string
(Required)
The digital identifier of the content set (see “Digital Identifiers” on page
URLS
name tree, this allows its
related entry in the
IDS
name tree to be found.
(Required)
An array of indirect references to the objects belonging to the content set.
The order of objects in the array is undefined in general but may be restricted by spe-
cific content set subtypes.
(Req uired)
A source information dictionary (see Section 10.9.4, “Source Information”)
or an array of such dictionaries, describing the sources from which the objects belong-
ing to the content set were created.
(Optional)
The
content type,
an ASCII string characterizing the source from which the
objects belonging to the content set were created. The string should conform to the
content type specification described in Internet RFC 2045,
Multipurpose Internet Mail
Extensions (MIME) Part One: Format of Internet Message Bodies
(see the Bibliography).
For example, for a page set consisting of a group of PDF pages created from an HTML
file, the content type would be
text / html
.
(Optional)
A time stamp giving the date and time at which the content set was created.
TABLE 10.39 Additional entries specific to a Web Capture page set
O
array
SI
dictionary
or array
ASCII string
CT
TS
date
KEY
TYPE
VALUE
S
name
text string
byte string
(Required)
The subtype of content set that this dictionary describes; must be
SPS
(“Spi-
der page set”) for a page set.
(Optional)
The title of the page set, a text string representing it in human-readable
form.
(Optional)
A text identifier generated from the text of the page set, as described in
T
TID
Image Sets
An
image set
is a content set containing a group of image XObjects generated
from a common source, such as multiple frames of an animated GIF image. (Web
Capture 4.0 always generates a single image XObject for a given image.) A single
XObject may not belong to more than one image set. Table 10.40 shows the con-
tent set dictionary entries specific to this type of content set.