This document is Edition 4 of ISO/IEC 19775-1, Extensible 3D (X3D). The full title of the International Standard is: Information technology —Computer graphics, image processing and environmental data representation— Extensible 3D (X3D).

Parts	Description
Part 1: Architecture and base components	Part 1 contains the abstract functional specification for the X3D framework, and definitions of the standardized components and profiles.