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For each class of resources, this International Standard
specifies the way in which the use of the resource is invoked
and the effect of the use of a resource in the processing of a
document. The structure elements which are used for defining and
accessing resources and the processing of those structure elements are
specified in Resources may be defined as specified in this International
Standard or may be made available in the environment of the
Presentation Process by means of a process outside of the scope
of this International Standard. Resources which are defined as specified in this
International Standard are defined
by RESOURCE DEFINITION structure elements.
A RESOURCE DEFINITION structure element may be
subordinate to either:
A RESOURCE DEFINITION which is subordinate to
an ENVIRONMENT RESOURCE defines a resource for
inclusion in the environment of the Presentation Process. The
scope of such a RESOURCE DEFINITION is system
dependent.
A RESOURCE DEFINITION which is subordinate to
a DOCUMENT defines a resource for use in the
processing of the document. The scope of such
a RESOURCE DEFINITION is the set of all structure
elements in the most immediately superior BLOCK which
follow the RESOURCE DEFINITION in the sequential
order and all of their subordinates.
A resource in the environment of the Presentation Process is
identified by a combination of:
The Environment Identifier need only be unique within a
particular resource class to unambiguously identify a resource.
A RESOURCE DEFINITION which is subordinate to
an ENVIRONMENT RESOURCE structure element binds an
Environment Identifier to the defined resource in the
environment of the Presentation Process. The scope of this
binding is system dependent.
A Document RESOURCE DEFINITION binds an
Environment Identifier to the defined resource for the
processing of the DOCUMENT. The scope of this binding
is the set of all structure elements in the most immediately
superior BLOCK which follow
the RESOURCE DEFINITION in the sequential order.
A resource in the environment of the Presentation Process can
be undefined by a RESOURCE UNDEFINITION structure
element. The effect of undefining a resource is to unbind the
identifying Environment Identifier from the resource so that it
can no longer be referenced by that Environment Identifier.
With the exception of Context Dictionaries, resources which
are used in content processing are represented by reference
objects. The type of reference object used to represent a
resource depends on the resource class shall be as shown in
A document that uses a resource must declare it in
a RESOURCE DECLARATION, which makes the resource
available to the Content Processor as part of the Context of
Interpretation.
A RESOURCE DECLARATION binds a Name to a reference
object which references a resource. With the exception of
Context Dictionaries, a resource which has been declared by
a RESOURCE DECLARATION is made available for content
processing by the execution of either
Context Dictionaries, in contrast, are made available by
means of CONTEXT DECLARATION
or CONTEXT ADDITION structure elements which place
them on the Context Stack.
The scope of a RESOURCE DECLARATION, and the scope
of the binding of a Name to a reference object by
a RESOURCE DECLARATION, consist of the set of all
structure elements in the most immediately
superior BLOCK which follow
the RESOURCE DEFINITION in the sequential order, and
all of their subordinates. The effect of the binding of a Name
to a reference object by a RESOURCE DECLARATION can
be overridden by subsequent RESOURCE DECLARATION in
the same BLOCK or in a
subordinate BLOCK.
An ENVIRONMENT RESOURCE structure element shall be
a composite structure element which shall have the following
immediate subordinates:
The immediate subordinates shall occur in the above order.
A RESOURCE UNDEFINITION structure element shall be
a composite structure element which shall have the following
immediate subordinates:
The immediate subordinates shall occur in the above order.
The processing of an ENVIRONMENT RESOURCE
structure element depends on system dependent administrative
policies and system resource availability. It may consist of
either:
The administrative policies and system resource availability,
and hence the effect of ENVIRONMENT RESOURCE
processing, may differ from ENVIRONMENT RESOURCE
to ENVIRONMENT RESOURCE and from time to time.
The processing of an ENVIRONMENT RESOURCE
structure element which has a
subordinate RESOURCE DEFINITION and which is not
ignored shall consist of:
A structure error shall occur if the processing of the
subordinate RESOURCE DEFINITION results in a
structure error or a structure warning.
The processing of a ENVIRONMENT RESOURCE structure
element which has a subordinate RESOURCE UNDEFINITION
and which is not ignored shall consist of deleting the binding
of the Environment Identifier which is the value of the
subordinate ENVIRONMENT RESOURCE IDENTIFIER to any
resource in the environment of the Presentation Process to which
is:
A structure warning shall occur if there is no resource in
the environment of the Presentation Process which satisfies
these conditions.
Whether or not the resource is actually deleted from the
environment of the Presentation Process is system dependent. If
the resource is identified by more than one Environment
Identifier, the system may delete the resource itself (deleting
the binding of any other Environment Identifiers to the
resource), or delete only the binding of the current Environment
Identifier to the resource (preserving the resource itself and
other Environment Identifier bindings).
A RESOURCE DEFINITION structure element shall be a
composite structure element which shall have the following
immediate subordinates:
The immediate subordinates shall occur in the above order.
A RESOURCE CLASS IDENTIFIER structure element
shall be a base structure element. The type of the value of
the RESOURCE CLASS IDENTIFIER shall be an Enumerated
type. The values of this type and the class of resources
identified shall be as shown in An ENVIRONMENT RESOURCE IDENTIFIER structure
element shall be a base structure element. The value of
an ENVIRONMENT RESOURCE IDENTIFIER shall be of type
The value of an ENVIRONMENT RESOURCE IDENTIFIER
which is subordinate to an ENVIRONMENT RESOURCE
should be an Object Identifier or a registered Public
Identifier.
A RESOURCE SPECIFICATION structure element shall
be one of:
There are no filter specification structure elements defined
by this International Standard.
The processing of a RESOURCE DEFINITION structure
element shall consist of:
A structure warning shall occur if the resource defined by
the RESOURCE SPECIFICATION is not of the resource
class identified by the value of
the RESOURCE CLASS IDENTIFIER.
If the RESOURCE DEFINITION is subordinate to
a DOCUMENT, a structure error shall occur if the
resource defined by the RESOURCE SPECIFICATION cannot
be added to the environment of the Presentation Process due to
limitations in available space.
If there is a resource in the environment of the Presentation
Process which is both
then the binding of the value of
the ENVIRONMENT RESOURCE IDENTIFIER to that resource
shall be superseded by the binding defined in step d for the
scope of the RESOURCE DEFINITION.
A RESOURCE DECLARATION structure element shall be
a composite structure element which shall have the following
immediate subordinates:
The immediate subordinates shall occur in the above order.
An INTERNAL RESOURCE IDENTIFIER structure element
shall be a base structure element. The value of
an INTERNAL RESOURCE IDENTIFIER shall be of type
The processing of a RESOURCE DECLARATION structure
element shall consist of:
The processes of resource identification and name binding are
specified below.
If there is a RESOURCE DEFINITION in the context
of the RESOURCE DECLARATION which both
then the declared resource shall be the resource defined by
the most immediately superior
such RESOURCE DEFINITION.
If there is no such RESOURCE DEFINITION, the
resource which is to be declared shall be the resource (if any)
in the environment of the Presentation Process which is both
The scope of the binding of the value of
the INTERNAL RESOURCE IDENTIFIER to the reference
object which references the declared resource is the set of all
structure elements in the most immediately
superior BLOCK which follow
the RESOURCE DEFINITION in the sequential order and
all of their subordinates, unless overridden by a
subsequent RESOURCE DECLARATION in the
same BLOCK or in a subordinate BLOCK.
If the RESOURCE DECLARATION falls within the scope
of a preceding RESOURCE DECLARATION which bound the
same Name to a reference object which references a resource of
the same class, then the later binding shall take precedence
within its own scope.
If there is no resource which is of the class specified by
the value of the RESOURCE CLASS IDENTIFIER and which
is identified by the value of
the ENVIRONMENT RESOURCE IDENTIFIER, no structure
processing error or warning shall occur. However, no change
shall be made to the Block State of the most immediately
superior BLOCK, and the Name which is the value of
the INTERNAL RESOURCE IDENTIFIER shall not be bound
to a reference object by the processing of
the RESOURCE DECLARATION. Consequently, a reference
to a resource using that Name during the processing of the
content of a TOKENSEQUENCE may result in a content
processing error.
A Context Dictionary is a Dictionary which is defined by
a DICTIONARY SPECIFICATION structure element. A
Context Dictionary is not modifiable after processing of
the DICTIONARY SPECIFICATION which defines it.
A DICTIONARY SPECIFICATION structure element shall
be a composite structure element which shall have the following
immediate subordinates:
The immediate subordinates shall occur in the above order.
The processing of a DICTIONARY SPECIFICATION
structure element shall consist of:
The Dictionary referenced by the DictionaryReference on the
top of the Operand Stack of the Virtual Machine State returned
by the Content Processor shall be called the Context Dictionary
defined by the RESOURCE SPECIFICATION.
A structure warning shall occur if element on the top of the
Operand Stack of the Virtual Machine State returned by the
Content Processor is not a DictionaryReference, or if the status
returned by the Content Processor is other than A Color Space is represented by a Color Space Object, which
is a Vector whose structure is as specified in Each Color Space is a member of a Color Space Family.
Correspondingly, the first element of a Color Space Object is a
Color Space Family Identifier. A Color Space Family Identifier
is an OctetStringReference which references an OctetString which
contains the canonical character string form of a public
identifier (as defined by ISO/IEC 9070) which
identifies the Color Space Family, encoded
using ISO/IEC 646.
Each Presentation Process has a Color Space Family Identifier
for each Color Space Family which it is capable of supporting.
The Color Space Families defined by this International Standard,
and the public identifier which is represented by the content of
the OctetString referenced by each of the corresponding Color
Space Family Identifiers, shall be shown in A COLOR SPACE SPECIFICATION structure element
shall be a composite structure element whose immediate
subordinates shall consist of:
The immediate subordinates shall occur in the above order.
A COLOR SPACE FAMILY IDENTIFIER structure element
shall be a base structure element. The value of
a COLOR SPACE FAMILY IDENTIFIER shall be of type
Public Object Identifier. The Object Names for which Public
Object Identifier values are defined by this International
Standard, and the Color Space Families identified by the
corresponding Color Space Family Identifiers, are shown in
A PRIMARY SET SPECIFICATION provides a hint which
characterizes color parameters referenced to the color space.
The PRIMARY SET SPECIFICATION specifies the set of
color primaries relative to which the color data has been
generated. This information is useful for device color spaces,
for which it may be used to affect the default mapping from
parametric color specifications to device colorants. It may be
ignored in processing the colorimetric (CIE based)
color spaces.
A PRIMARY SET SPECIFICATION structure element
shall be one of:
A PRIMARY SET IDENTIFIER structure element shall
be a base structure element. The value of
a PRIMARY SET IDENTIFIER shall be of type
A PRIMARIES LIST structure element shall be a
composite structure element which shall have the following
immediate subordinates:
A PRIMARY COLOR IDENTIFIER structure element shall
be a base structure element. The value of
a PRIMARY COLOR IDENTIFIER shall be of type
The processing of a COLOR SPACE SPECIFICATION
structure element shall consist of:
The Vector referenced by the VectorReference which was on the
top of the Operand Stack of the Virtual Machine State returned
by the Content Processor (or the VectorReference itself) shall
be called the Color Space Object defined by
the COLOR SPACE SPECIFICATION.
A structure warning shall occur if element on the top of the
Operand Stack of the Virtual Machine State returned by the
Content Processor is not a VectorReference, if the
referenced Vector is not a Color Space Object as
defined by This International Standard defines A Data Source is represented by a A DATA SOURCE SPECIFICATION shall be one of
A DATA BLOCK structure element shall be a base
structure element. The value of a DATA BLOCK shall be
of type The value of the DATA BLOCK structure element
represents a sequence of octets. The sequence of octets
represented by the depends on the Structure Representation and
Interchange Format being used:
The determination of the sequence of octets represented by
the value of the DATA BLOCK structure element is
performed implicitly as part of the creation of the StreamObject
defined by the DATA SOURCE SPECIFICATION structure
element.
The processing of a DATA SOURCE SPECIFICATION
which is a LOCATION IDENTIFIER shall consist of:
The Data Source resource defined in step b shall be called
the Data Source resource defined by
the DATA SOURCE SPECIFICATION.
The processing of a DATA SOURCE SPECIFICATION
which is a DATA BLOCK shall consist of defining a
Data Source resource for which the data consists of a sequence
of octets which are derived from the value of the immediately
subordinate DATA BLOCK structure element, followed by
an end-of-data indication. The sequence of octets depends on the
Structure Representation and Interchange Format being used.
This International Standard defines one The Data Source resource A Filter resource is represented by a Filter Identifier. A
Filter Identifier is an There is no RESOURCE SPECIFICATION structure
element defined by this International Standard which defines a
Filter resource. The process by which a Filter resource is
installed in the environment of the Presentation Process is
outside of the scope of this International Standard.
This International Standard defines a A Pattern is represented by a Pattern Dictionary
as defined in The value of a PATTERN SPECIFICATION shall be a
composite structure element whose immediate subordinates shall
consist of:
The processing of a PATTERN SPECIFICATION shall
consist of:
The Dictionary which was referenced by the
DictionaryReference on the top of the Operand Stack of the
Virtual Machine State returned by the Content Processor shall be
called the Pattern Dictionary defined by
the PATTERN SPECIFICATION.
A structure warning shall occur if the element on the top of
the Operand Stack of the Virtual Machine State returned by the
Content Processor is not a DictionaryReference, or if the status
returned by the Content Processor is other than A Form is represented by a Form Dictionary
as defined in A FORM SPECIFICATION shall be a composite
structure element whose immediate subordinates shall consist of:
The processing of a FORM SPECIFICATION shall
consist of:
The Dictionary which was referenced by the
DictionaryReference on the top of the Operand Stack of the
Virtual Machine State returned by the Content Processor shall be
called the Form Dictionary defined by
the FORM SPECIFICATION.
A structure warning shall occur if the element on the top of
the Operand Stack of the Virtual Machine State returned by the
Content Processor is not a DictionaryReference, or if the status
returned by the Content Processor is other than General
Resource Definition
Resource Identification
Resource Undefinition
Resource Reference Objects
Resource Declaration
ENVIRONMENT RESOURCE
RESOURCE UNDEFINITION
ENVIRONMENT RESOURCE Processing
Subordinate RESOURCE DEFINITION
Subordinate RESOURCE UNDEFINITION
RESOURCE DEFINITION
RESOURCE CLASS IDENTIFIER
ENVIRONMENT RESOURCE IDENTIFIER
RESOURCE SPECIFICATION
RESOURCE DEFINITION Processing
RESOURCE DECLARATION
INTERNAL RESOURCE IDENTIFIER
RESOURCE DECLARATION Processing
Resource Identification
Name Binding
No Resource
Context Dictionary
DICTIONARY SPECIFICATION
DICTIONARY SPECIFICATION Processing
Color Space
Color Space Family Identifiers
COLOR SPACE SPECIFICATION
COLOR SPACE FAMILY IDENTIFIER
PRIMARY SET SPECIFICATION
PRIMARY SET IDENTIFIER
PRIMARIES LIST
PRIMARY COLOR IDENTIFIER
COLOR SPACE SPECIFICATION Processing
Standard Color Space Resources
Data Source
DATA SOURCE SPECIFICATION
DATA BLOCK
DATA SOURCE SPECIFICATION
Processing
LOCATION IDENTIFIER DATA SOURCE SPECIFICATION
Processing
DATA BLOCK DATA SOURCE SPECIFICATION
Processing
Standard Data Source Resources
Filter
Filter RESOURCE SPECIFICATION
Standard Filters
Pattern
PATTERN SPECIFICATION
PATTERN SPECIFICATION Processing
Form
FORM SPECIFICATION
FORM SPECIFICATION Processing