ISO/IEC JTC 1/SC 2/WG 2 - Universal coded character set

This document specifies the architecture of the UCS; defines terms used for the UCS; describes the general structure of the UCS codespace; specifies the assigned planes of the UCS: the Basic Multilingual Plane (BMP) of the UCS, the Supplementary Multilingual Plane (SMP), the Supplementary Ideographic Plane (SIP), the Tertiary Ideographic Plane (TIP), and the Supplementary Special-purpose Plane (SSP); defines a set of graphic characters used in scripts and the written form of languages on a world-wide scale; specifies the names for the graphic characters and format characters of the BMP, SMP, SIP, TIP, SSP and their coded representations within the UCS codespace; specifies the coded representations for control characters and private use characters; specifies three encoding forms of the UCS: UTF-8, UTF-16, and UTF-32; specifies seven encoding schemes of the UCS: UTF-8, UTF-16, UTF-16BE, UTF-16LE, UTF-32, UTF-32BE, and UTF-32LE; specifies the management of future additions to this coded character set. NOTE The determination of suitability of these characters for use as identifiers in programming languages is not specified by this document but can be found in an external reference. See Annex U.

ISO/IEC 10646:2017 specifies the Universal Coded Character Set (UCS). It is applicable to the represen-tation, transmission, interchange, processing, storage, input, and presentation of the written form of the lan-guages of the world as well as of additional symbols. - specifies the architecture of this International Standard, - defines terms used in this International Standard, - describes the general structure of the UCS codespace, - specifies the Basic Multilingual Plane (BMP) of the UCS, - specifies supplementary planes of the UCS: the Supplementary Multilingual Plane (SMP), the Supplemen-tary Ideographic Plane (SIP), the Tertiary Ideographic Plane (TIP), and the Supplementary Special-purpose Plane (SSP), - defines a set of graphic characters used in scripts and the written form of languages on a world-wide scale, - specifies the names for the graphic characters and format characters of the BMP, SMP, SIP, TIP, SSP and their coded representations within the UCS codespace, - specifies the coded representations for control characters and private use characters, - specifies three encoding forms of the UCS: UTF-8, UTF-16, and UTF-32, - specifies seven encoding schemes of the UCS: UTF-8, UTF-16, UTF-16BE, UTF-16LE, UTF-32, UTF-32BE, and UTF-32LE, - specifies the management of future additions to this coded character set. The UCS is an encoding system different from that specified in ISO/IEC 2022. The method to designate UCS from ISO/IEC 2022 is specified in 12.2. A graphic character will be assigned only one code point in the standard, located either in the BMP or in one of the supplementary planes.

ISO/IEC 10646:2104 specifies the Universal Character Set (UCS). It is applicable to the representation, transmission, interchange, processing, storage, input and presentation of the written form of the languages of the world as well as additional symbols. It covers 120 585 characters from the world's scripts. ISO/IEC 10646:2014: specifies the architecture of ISO/IEC 10646; defines terms used ISO/IEC 10646; describes the general structure of the UCS codespace; specifies the Basic Multilingual Plane (BMP) of the UCS; specifies supplementary planes of the UCS: the Supplementary Multilingual Plane (SMP), the Supplementary Ideographic Plane (SIP), the Tertiary Ideographic Plane (TIP), and the Supplementary Special-purpose Plane (SSP); defines a set of graphic characters used in scripts and the written form of languages on a world-wide scale; specifies the names for the graphic characters and format characters of the BMP, SMP, SIP, SSP and their coded representations within the UCS codespace. (Note: TIP is currently empty); specifies the coded representations for control characters and private use characters; specifies three encoding forms of the UCS: UTF-8, UTF-16, and UTF-32; specifies seven encoding schemes of the UCS: UTF-8, UTF-16, UTF-16BE, UTF-16LE, UTF-32, UTF-32BE, and UTF-32LE; specifies the management of future additions to this coded character set. The charts of the ideographic characters are now in multi-column format. The UCS is an encoding system different from that specified in ISO/IEC 2022. ISO/IEC 10646:2014 specifies the method to designate UCS from ISO/IEC 2022. A graphic character will be assigned only one code point in the standard, located either in the BMP or in one of the supplementary planes. By defining a consistent way of encoding multilingual text it enables the exchange of data internationally. The information technology industry gains data stability, greater global interoperability and data interchange. ISO/IEC 10646 has been widely adopted on the World Wide Web and implemented in modern operating systems and computer languages.

ISO/IEC 10646:2012 specifies the Universal Character Set (UCS). It is applicable to the representation, transmission, interchange, processing, storage, input and presentation of the written form of the languages of the world as well as additional symbols. It covers 110 181 characters from the world's scripts. ISO/IEC 10646:2012: specifies the architecture of ISO/IEC 10646. defines terms used in ISO/IEC 10646. describes the general structure of the UCS codespace. specifies the Basic Multilingual Plane (BMP) of the UCS. specifies supplementary planes of the UCS: the Supplementary Multilingual Plane (SMP), the Supplementary Ideographic Plane (SIP), the Tertiary Ideographic Plane (TIP), and the Supplementary Special-purpose Plane (SSP). defines a set of graphic characters used in scripts and the written form of languages on a world-wide scale. specifies the names for the graphic characters and format characters of the BMP, SMP, SIP, SSP and their coded representations within the UCS codespace. (Note: TIP is currently empty). specifies the coded representations for control characters and private use characters. specifies three encoding forms of the UCS: UTF-8, UTF-16, and UTF-32. specifies seven encoding schemes of the UCS: UTF-8, UTF-16, UTF-16BE, UTF-16LE, UTF-32, UTF-32BE, and UTF-32LE. specifies the management of future additions to this coded character set. The charts of the ideographic characters are now in multi-column format. The UCS is an encoding system different from that specified in ISO/IEC 2022. The method to designate UCS from ISO/IEC 2022 is specified in 12.2. A graphic character will be assigned only one code point in the standard, located either in the BMP or in one of the supplementary planes. By defining a consistent way of encoding multilingual text, ISO/IEC 10646:2012 enables the exchange of data internationally. The information technology industry gains data stability, greater global interoperability and data interchange. ISO/IEC 10646 has been widely adopted on the World Wide Web and implemented in modern operating systems and computer languages.

ISO/IEC 10646:2011 specifies the Universal Coded Character Set (UCS). It is applicable to the representation, transmission, interchange, processing, storage, input and presentation of the written form of the languages of the world as well as additional symbols. It covers over 109 000 characters from the world's scripts. ISO/IEC 10646:2011: specifies the architecture of ISO/IEC 10646; defines terms used ISO/IEC 10646; describes the general structure of the UCS codespace; specifies the Basic Multilingual Plane (BMP) of the UCS; specifies supplementary planes of the UCS: the Supplementary Multilingual Plane (SMP), the Supplementary Ideographic Plane (SIP), the Tertiary Ideographic Plane (TIP), and the Supplementary Special-purpose Plane (SSP); defines a set of graphic characters used in scripts and the written form of languages on a world-wide scale; specifies the names for the graphic characters and format characters of the BMP, SMP, SIP, TIP, SSP and their coded representations within the UCS codespace; specifies the coded representations for control characters and private use characters; specifies three encoding forms of the UCS: UTF-8, UTF-16, and UTF-32; specifies seven encoding schemes of the UCS: UTF-8, UTF-16, UTF-16BE, UTF-16LE, UTF-32, UTF-32BE, and UTF-32LE; specifies the management of future additions to this coded character set. The UCS is an encoding system different from that specified in ISO/IEC 2022. ISO/IEC 10646:2011 specifies the method to designate UCS from ISO/IEC 2022. A graphic character will be assigned only one code point in the standard, located either in the BMP or in one of the supplementary planes. By defining a consistent way of encoding multilingual text, ISO/IEC 10646:2011 enables the exchange of data internationally. The information technology industry gains data stability, greater global interoperability and data interchange. ISO/IEC 10646:2011 has been widely adopted in new Internet protocols and implemented in modern operating systems and computer languages.

ISO/IEC 10646:2003 specifies the Universal Multiple-Octet Coded Character Set (UCS). It is applicable to the representation, transmission, interchange, processing, storage, input and presentation of the written form of the languages of the world as well as additional symbols. ISO/IEC 10646:2003 specifies the architecture of ISO/IEC 10646:2003; defines terms used in ISO/IEC 10646:2003; describes the general structure of the coded character set; specifies the Basic Multilingual Plane (BMP) of the UCS; specifies supplementary planes of the UCS: the Supplementary Multilingual Plane (SMP), the Supplementary Ideographic Plane (SIP) and the Supplementary Special-purpose Plane (SSP); defines a set of graphic characters used in scripts and the written form of languages on a world-wide scale; specifies the names for the graphic characters of the BMP, SMP, SIP, SSP and their coded representations; specifies the four-octet (32-bit) canonical form of the UCS: UCS-4; specifies a two-octet (16-bit) BMP form of the UCS: UCS-2; specifies a multiple byte (one to four) byte transformation UTF-8 for use with ISO 646 (ASCII) byte-oriented environments; specifies a two 16-bit form and associated transformation UTF-16 for supplementary characters; specifies collection identifiers for selected set of character subsets; specifies the coded representations for control functions; specifies the management of future additions to this coded character set; incorporates the Unicode bi-directional algorithm and normalization forms by reference. The UCS is a coding system different from that specified in ISO/IEC 2022. A graphic character will be assigned only one code position in ISO/IEC 10646:2003, located either in the BMP or in one of the supplementary planes. NOTE - The Unicode Standard, Version 4.0 includes a set of characters, names, and coded representations that are identical with those in ISO/IEC 10646:2003. It additionally provides details of character properties, processing algorithms, and definitions that are useful to implementers. Version 4.0 strengthens Unicode support for worldwide communication, software availability, and publishing. By defining a consistent way of encoding multilingual text ISO/IEC 10646:2003 enables the exchange of data internationally. The information technology industry gains data stability, greater global interoperability and data interchange. ISO/IEC 10646:2003 has been widely adopted in new Internet and W3C protocols and mark up languages such as XML and HTML, and implemented in modern operating systems and computer programming languages. This edition covers over 96 000 characters from the world's scripts.