CHAPTER 9
780
Multimedia Features
TABLE 9.27 Entries in a software identifier dictionary
KEY
TYPE
VALUE
Type
name
ASCII string
array
boolean
(Optional)
The type of PDF object that this dictionary describes; if present, must be
SoftwareIdentifier
for a software identifier dictionary.
(Required)
A URI that identifies a piece of software (see “Software URIs,” below).
(Optional)
The lower bound of the range of software versions that this software
identifier object specifies (see “Version arrays,” below). Default value: the array
[0]
.
(Optional)
If
true
, the lower bound of the interval defined by
L
and
H
is inclusive;
that is, the software version must be greater than or equal to
L
(see “Version arrays,”
false
, it is not inclusive. Default value:
true
.
(Optional)
The upper bound of the range of software versions that this software
identifier object specifies (see “Version arrays,” below). Default value: an empty ar-
ray
[]
.
(Optional)
If
true
, the upper bound of the interval defined by
L
and
H
is inclusive;
that is, the software version must be less than or equal to
H
(see “Version arrays,” be-
false
, it is not inclusive. Default value:
true
.
(Optional)
An array of byte strings representing operating system identifiers that
indicate which operating systems this object applies to. The defined values are the
same as those defined for SMIL 2.0’s
systemOperatingSystem
attribute. There may
not be multiple copies of the same identifier in the array. An empty array is consid-
ered to represent all operating systems. Default value: an empty array.
U
L
LI
H
array
HI
boolean
OS
array
Software URIs
The
U
entry is a URI (universal resource identifier) that identifies a piece of soft-
ware. It is interpreted according to its scheme; the only presently defined scheme
is
vnd.adobe.swname
. The scheme name is case-insensitive; if is not recognized by
the viewer application, the software must be considered a non-match. The syntax
of URIs of this scheme is
“vnd.adobe.swname:”
software_name
where
software_name
is equivalent to
reg_name
as defined in Internet RFC 2396,
Uniform Resource Identifiers (URI): Generic Syntax;
see the Bibliography.
software_name
is considered to be a sequence of UTF-8-encoded characters that
have been escaped with one pass of URL escaping (see “URL Strings” on page