Scope and objective

This Recommendation defines features of the Specification and Description Language that extend the features of the Basic Specification and Description Language defined in [ITU-T Z.101] to comprehensively cover the abstract grammar of the language. A canonical concrete syntax is given to cover the abstract grammar. The abstract grammar defined in this document with the abstract grammar of the Basic Specification and Description Language comprehensively defines properties of the language except the details of data and expressions. This Recommendation also includes features for inheritance of types, generic systems, macros and the handling of the Universal Multiple-Octet Coded Character Set. Together with Recommendations [ITU-T Z.100], [ITU-T Z.101], [ITU-T Z.103], [ITU-T Z.104], [ITU-T Z.105], [ITU-T Z.106] and [ITU-T Z.107], this Recommendation forms a reference manual for the language.