This International Standard specifies the procedures to be followed in preparing, publishing, and maintaining a register of graphic character repertoires which are composed entirely of graphic characters from ISO 10367. The coded representation of the characters of such repertoires is not prescribed by the entries in the register.

The SPACE character is deemed to be available with any repertoire.

A numeric identifier shall be assigned to each registered repertoire. It is intended to be used as a parameter value of the control function IDENTIFY GRAPHIC SUBREPERTOIRE (IGS) defined in ISO 6429. The numeric identifier may also be used in communication protocols and for visual identification by human operators.