BS ISO/IEC ISP 11185-17:1995 Information technology. International standardized profiles FVT2nn. Virtual terminal basic class. Register of control object type definitions - Part 17. FVT2115. Help text control object
Withdrawn
Printed version of this is available at library. To request, please e-mail to referencepk@usm.my and include a copy of this record in your e-mail.
1.1 General
The concept of Profiles for OSI. and the structure of the International Standardized Profiles that document them, are defined in lSO/lEC TR 10000-1. Such Profiles are divlded into a number of different classes and sub-classes, Two of these classes contain sub-classes comprising functions of the Virtual Terminal Basic Class Service and Protocol specified in the base Standards ISO 9040 and ISO 9041, These are the Application Profiles (A-Profiles) and the Interchange Format and Representation Profiles (F-Profiles).
The relationship between A-Profiles and F-Profiles is described in 7.3.2 of ISO/IEC TR 10000-1 and is as follows. Application Layer base Standards require, implicitly or explicltly, the structure of information carried or referenced by them to be specified for each instance of communication. It is the purpose of F-Profiles to specify such information structures, Particular functional requirements may then be met by the combination of an A-Profile with one or more F-Profiles.
Establishment of a Wassociation involves the selection by negotiation of a particular Virtual Terminal Envlronment Profile (VTE-Profile), and of particular values for any arguments of t-hat VTEProfile. The VTE-Profile specification, and possibly also the values of certain VTE-Profile arguments. may in turn reference the definitions of VT control Object types and assignment types. These VTE-profiles, control Object types and assignment types arc thus Information structures that require explicit reference within the VT protocol. Particular instances of these structures arc fully defined within the base Standards, but the base Standards also provide for further instances to be d8fin8d by registration. Esch registered instance constitutes an F-Profile within the framework of ISO/IEC TR 10000.
The Virtual Terminal Basic Class Service and Protocol may be used to realise a wide rang8 of distinct functions. Particular functions may be realised through the s818ction of appropriate VT functionat units, F-Profiles and other WE-Profil8 argument values, The specification of the selection required to realise a particular function and to promote interoperability constitutes a Virtual Terminal A-Profile within the framework of lSO/lEC TR 10000.
The three International Registers of VT information truckers and the specifications of VT Application Profiles are each published as a separate multi-part ISP as follows:
- ISO/IEC ISP 11184 is the Register of VTEprofiles;
- ISO/IEC ISP 11185 is t-he Register of control Object type definitions;
- ISO/IEC ISP 11186 is the Register of assignment-type definitions;
- ISO/IEC ISP 11187 contains the specifications of VT Application Profiles.
This part of ISO/IEC ISP 11185 contains the definition of a control Object type that may be used to facilitate the integration of the VT-User function with a Help provider facility resident in the terminal end-system. The Application VT-User will have the capability to set up and control the Help text to be associated with objects such as forms, fiekk and terminal Signals. The Help text will be available for display, via t-he Help provid8r facility, upon request for in-context Help by the human User of the terminal System.
1.2 Position within the taxonomy
The taxonomy of International Standardized Profiles for OSI is laid down in ISO/IEC TR 10000-2. Within the classification scheme of this taxonomy, the OSI Profiles specified in this International Standardized Profile are in the Virtual Terminal Registered Object Format and Representation Profiles.
A Profile within this subclass has a Profile identifier of the form FVTabc, where abc is a structured numerical identifier that identifies the Position of the Profile within each of the three levels of subdivision of the subclass. The values of a and b are Single digits but c is an integer that is not necessarily a Single digit,
ln principle the ISO Virtual Terminal model allows for multiple classes of Operation, although at the time of publication of this International Standardized Profile only the Basic Class has been defined. The value of the identifier component a distinguishes between distinct types of information Object as follows:
- u= 1 for Basic Class VTE-profiles:
- u = 2 for Basic Class Control Objects:
- u = 3 for Basic Class Assignment Types.
Values of u greater than 3 are reserved for future developments.
This International Standardized Profile ISO/IEC ISP 11185 contains the specifications of the Profiles with identifiers of the form FVT2bc. For this form of identifier, the component b distinguishes between the five major classifications of Basic Class Control Objects as follows:
- b = 1 for Miscellaneous Control Objects;
- b = 2 for Field Entry Instruction Control Objects;
- b = 3 for Field Entry Pilot Control Objects;
- b = 4 for Reference Information Objects;
- b = 5 for Termination Conditions Control Object
Each of these classifications corresponds to a subregister under the procedures of ISO/IEC 9834-5, The identifier component c is the serial number of the control Object type in the appropriate sub-register. values of b greater than 5 are reserved for new classifications of Basic Class Control Objects that may be defined in future amendments to ISO 9040.
This part of ISO/IEC ISP 11185 contains the definition of the Miscellaneous Control Object type With th8 Profil8 identifier M2115 - Help Text Control Object.
Computer applications; Open systems interconnection; Data transfer; Communication procedures; Computer software; Syntax; Information exchange; Computer-computer communications; Application layer (OSI)
BS ISO/IEC ISP 11185-17:1995 Information technology. International standardized profiles FVT2nn. Virtual terminal basic class. Register of control object type definitions - Part 17. FVT2115. Help text control object
