R Y - A Proposal for a Temporal Extension of the Virtual Reality Modeling Language Revised at 15 October 1999. All Rights Reserved. The Introduction defines the problem, purpose and design criteria. Definitions contains the glossary of terminology used in this extension.
Concepts describes various fundamentals of using valid time.
Node reference defines the syntax and semantics of nodes in VRML History. Implementation gives two browser-specific example implementation of VRML History. For questions or comments, contact Hartmut Luttermann .