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T.504 i:- x|@   Fascicle VII.7 Rec. T.504 i   Recommendation T.504  DOCUMENT APPLICATION PROFILE FOR VIDEOTEX INTERWORKING ă &CONTENTS 1HScope 2HField of application 3HReferences 4HDefinitions h  5HCharacteristics supported by this document application profile H5.1  Overview H5.2  Logical characteristics H5.3  Layout characteristics 6HDefinition of the document application profile H6.1  Overview H6.2  Document profile level H6.3  Specification of attributes Annex ASummary of ASN.1 object identifiers 1 H Scope  1.1HThis Recommendation defines a document application profile which conforms to T.400 Series of Recommendations.  HIts purpose is to specify a document architecture level and a content architecture level, and to select an interchange format class suitable for videotex interworking as defined in configuration 1 of Recommendation F.300 and in Recommendation T.564.  2 H Field of application  HThis Recommendation defines a document that is in conformance with the T.400 Series of Recommendations and that allows interworking between two videotex services using configuration 1 defined in CCITT Recommendation F.300 and Recommendation T.564. The videotex documents are interchanged only in a formatted form, allowing the recipient to reproduce them as intended by the originator.  HThis document application profile is defines the features of the document structure that can be interchanged. 3 H References H Rec.F.300:Videotex service  H Rec.X.200:Reference model of open systems interconnection for CCITT applications  H Rec.X.213:Network service definition for open systems interconnection for CCITT applications'  H Rec.X.214:Transport service definition for open systems interconnection of CCITT applications'  H Rec.X.224:Transport protocol specification for open systems interconnection for CCITT applications'  H Rec.X.215:Session service definition for open systems interconnection of CCITT applications'  H Rec.X.225:Session protocol specification for open systems interconnection for CCITT applications'  H Rec.X.216:Presentation service definition for open systems interconnection for CCITT applications'  H Rec.X.226:Presentation protocol specification for open systems interconnection for CCITT applications' "  H Rec.X.217:Association control service definition for open systems interconnection for CCITT applications'  H Rec.X.227:Association control service specification for open systems interconnection for CCITT applications' H Rec.T.101:International interworking for videotex services  H Rec.T.400:Introduction to document architecture, transfer and manipulation'  H Rec.T.411:Open document architecture (ODA) and interchange format Introduction and general principles'  H Rec.T.412:Open document architecture (ODA) and interchange format Document structures f#LM#LRec.T.414:Open document architecture (ODA) and interchange format Document profile  H Rec.X.415:Open document architecture (ODA) and interchange format Open document interchange format (ODIF)'  H Rec.T.431:Document transfer and manipulation (DTAM) Services and protocols Introduction and general principles'  H Rec.T.432:Document transfer and manipulation (DTAM) Services and protocols Service definition'  H Rec.T.433:Document transfer and manipulation (DTAM) Services and protocols Protocol specification'  H Rec.T.441:Document transfer and manipulation (DTAM) Operational structure'  H Rec.T.523:Communication application profile DM1 for videotex interworking' H Rec.T.541:Operational application profile for videotex interworking' H Rec.T.564:Gateway characteristics for videotex interworking 4 H Definitions  HThe definitions of T.400 Series of Recommendations apply also to this Recommendation. 5 H Characteristics supported by this document application profile 5.1HOverview  HA videotex document is the information that is retrieved by a single user function and presented as a complete entity. Therefore the purpose of this document application profile is to allow the recipient to image the layout of the interchanged document as intended by the originator.  HThis section specifies the functional description of the features supported by this document application profile. 5.2HLogical characteristics HNot used. 5.3HLayout characteristics 5.3.1HLayout document structure  HAt a given time a document contains one single page which contains one or more blocks. HThe content of the block is: H "Videotex" content. % 5.3.2HDocument structure elements 5.3.2.1HPage format  HThe page format is expressed in accordance with the definition of the videotex service or videotex terminal, by using scaled measurement units. The relation between BMUs and SMUs is specified in the document profile. 5.3.2.2HBlock size  HThe position and the dimension of the blocks are restricted to be equal to those of the page. Block size not equal to page is for further study. 6 H Definition of the document application profile 6.1HOverview 6.1.1HDocument architecture level  HThe document application profile makes use of document architecture class FDA as defined in Recommendation T.412. HThe document architecture level includes the following structure: H a specific layout structure.  HThe document architecture level is defined in Tables 1/T.504, 2/T.504 and 3/T.504. 6.1.2HContent architecture level  HThe content architecture level that may be used in documents conforming to this document application profile is as follows: H "Videotex" HDetails are specified in Recommendation T.101. 6.2HDocument profile level  HThe document profile level used in this document application profile is defined in Table4/T.504. Every document interchanged in accordance with this document application profile must include a document profile. 6.2.1HInterchange format class  HThe interchange format class used in this document application profile is "B" as defined in Recommendation T.415. 6.2.2HDefinition of document structure  HThe document structure contains a specific layout structure. The number of hierarchical levels is 3, namely: H document layout root; H page; H block. HAll these levels are mandatory. HAt most one content portion can be associated with one block. 6.3HSpecification of attributes  HThe attributes applicable to constituents of the layout structure are defined in Tables1/T.504 and 2/T.504, using the following notation: H  attribute not applicable; Hm attribute is mandatory; Hnm  attribute is nonmandatory; Hd attribute is defaultable; H* exceptionally not used by this document application profile. ' $TABLE 1/T.504 *  Attributes applicable to layout objects ă   HP ,x--h.Xp x|@ w      Attribute  Document  Page  Block     layout root          w Shared attributesw     t      t  Object type  m  m  m  t  Object identifier (Note 1)  m  m  m  t  Subordinates  *  *  *  t  Content architecture class   d  d  t  Default value list  nm    t  Application comments    d  t       w Layout attributesw     t      t  Position (Note 2)    d  t  Dimensions (Note 2)   d  d  t  Page position   d   t  Medium type   d   t    8   8 X Note1According to the specifications of Recommendation T.412 this attribute may be omitted if the value can be derived unambiguously from the transmission sequence of the relevant objects.&  X Note2For the block, the value of the attributes position and dimensions is restricted to those of the page. Using other values is for further study.'  XpXp$%%p& t#TABLE 2/T.504 t) t Attributes applicable to content portions ă   w      Attribute  Content portion     Content identifier     layout (Note 1)  m        Type of coding  d        Coding attributes (Note 2)  d        Content information (Note 2)  d       Xp$%%p&Xp   X  Note1According to the specifications of Recommendation T.412 this attribute may be omitted if the value can be derived unambiguously from the transmission sequence of the relevant objects and content portions.& X  Note2The use of these attributes applicable to content portions is specified in RecommendationT.101.& +  XpXp$%%p&t#TABLE 3/T.504 t) t Attribute values for layout objects ă   w        Attribute  Basic value  Default  Nonbasic      value  value       w Shared attributesw             Object type  Document layout  None  None     root       Page   None     Block   None          Object identifier  See Rec. T.412  None  None          Content architecture  Videotex content   None    class  architecture            Default value lists  See Table 5/T.504  None  None          Application comments  See Rec. T.564 See Table 6/T.504  None                 w Layout attributesw             Position  See Rec. T.412 and  (0,0)  None     Notes 1 and 2            Dimensions  See Rec. T.412 and  (40,24)  None     Notes 1 and 2            Page position  See Rec. T.412 and  (0,0)  None     Note 1            Medium type  See Rec. T.412  ((40,24),  None      unspecified)       X Xp$%%p&hXp  X hhNote1Positions and dimensions are specified by using scaled measurement units. The unit scaling factor is defined by the attribute "unite scaling" within the document profile. The "nominal page size" within the attribute "medium type" defines the number of rows and columns to be imaged on the screen by the videotex application in terms of SMUs.'h  X  hFor the block, the position and dimensions are those of the page.  X hhNote2 It has to be taken into account that within the national videotex systems the position is usually determined by (1,1).'h  X  (  X hXpXp$%%p&t#TABLE 4/T.504 t) t Document profile descriptor ă   w      t  Data element name  Class  Value  Comments  t t  Document profile descriptor  M    t  Specific layout structure  m  1  Presence of specific  t     layout structure  t      t  Document characteristics  M    t  Document application profile  m  0 1 8 16 0  Object identifier  t      t  Document application  m   See Note 1  t  profile default     t      t  Document architecture class  m  1  FDA  t      t  Content architecture classes  m  0 1 8 16 3  Object identifier  t      t  Interchange format class  m  "B"   t  ODA version  m    t  Unit scaling  m    t      t  Document management attributes  NM   See Note 2  t      t  Title  nm    t  Document date and time  nm    t  Owners  nm    t  Document reference  nm    t  Additional information  nm    t    X Xp$%%p&Xp  X Note1Default values differing from those defined in T.412 are specified for the attributes (see Table 3/T.504):'  X Xcontent architecture class; Xdimensions; Xpage position; Xmedium type.  X Note2The relation specified by this attribute is not taken into account within the videotex interworking application. It is used when printing on paper of a videotex page is intended.'  XpXp$%%p& t#TABLE 5/T.504 t) t Default attributes that may be specified ă t in a default value list ă   w      Object type  Defaultable attribute     Page  Dimensions     Page position     Application comments     Block  Object identifier     Presentation attributes     Dimensions     Position     Application comments  >0Ԍ   Content portion  Type of coding     Coding attributes     Content information        t#TABLE 6/T.504 t) t Default values for application defined attributes defined in ă t Recommendation T.564 and mapped to the attribute application ă t comments defined in Recommendation T.412 ă   w      List of attributes  Default value      w Block:w     Displayindication  "Mandatory"        t&ANNEX A t) t(to Recommendation T.504) t) t) t Summary of ASN.1 object identifiers ă XThis Annex is an integral part of this Recommendation.   w      ASN.1 object identifier  Description  Section    value       0 1 8 16 0  Object identifier for  Table 4/T.504,     this document application  6.3     profile