The Oslo Modeling Language (M) aims to provide an efficient and natural way to define domain models and textual Domain-Specific Languages (DSLs). This specification, authored by its creators, details the language's design principles, focusing on capturing developer intent in a format suitable for standard database technologies. It addresses the need for a compact textual notation for organizing information and schematizing data, whether structured or unstructured. The book serves as the definitive reference for understanding the syntax and underlying model of the M language.

This draft specification for the Oslo Modeling Language (M) is presented as the authoritative reference by its original creators. The content focuses on the technical definition of the language, including its syntax, type system, and data model, along with introductions to domain modeling and DSL construction. It is intended for developers seeking a concise textual notation for defining models and languages that can be efficiently stored and queried. The material suggests a dense, technical document aimed at practitioners and language designers.