Table of Contents Previous Chapter ACL 4 BNF Grammar of the Object Specification Language Items which are italicized are grammar element names. Items in bold type are keywords in the language.
Items enclosed in single quotes are literal characters of the language.
4.1 Base Data Type Base data types define the underlying representation of a value. An aggregation defines constraints on a collection of base data type values. Matrix and interval aggregations are defined for real numbers. When a subdomain is declared, no relationship with the parent domain is maintained. A predefined class named Object always exists.