References

1

The VRML 1.0 language specification can be found at http://vrml.wired.com/vrml.tech/vrml10-3.html.

2

PCCTS is discussed in the usenet newsgroup comp.compilers.tools.pccts.

3

WebView, a public-domain browser developed by the San Diego Supercomputer Center, can be obtained at http://www.sdsc.edu/EnablingTech/Visualization/vrml/webview.html.

4

PCCTS source code and documentation is available from ftp://ftp.parr-research.com/ in the directory /pub/pccts and from a mirror site in the UK, ftp://src.doc.ic.ac.uk/ in the directory /computing/programming/languages/tools/pccts.

5

A prototype IVL grammar implementing the features described in this paper, and including a makefile and example syntax, can be obtained from ftp://ftp.ocnus.com/pub/IVL.

6

We have set up a web page with a form interface to drive the IVL interpreter and return the VRML scene to you. This site is located at http://www.ocnus.com/ivl.html.

7

A good introduction to DIS can be found at ftp://www.cs.nps.navy.mil/ in the file /pub/npsnet/DISIntro.ps. This location also has much more information about DIS, including source code for implementing DIS in your own application.

8

Source code modifications to the public domain SDSC VRML browser which allow it to interoperate with our metaverse can be obtained from ftp://ftp.ocnus.com/pub/IVL.

9

S.C. Johnson. Yacc --- Yet Another Compiler-Compiler. Comp. Sci. Tech. Rep., 32, July 1975.

10

Larry Niven. Ringworld. Ballantine Books, New York, 1970.

11

Terence J. Parr and Russell W. Quong. Adding Semantic and Syntactic Predicates to --- pred-. In Proceedings of the International Conference on Compiler Construction; Edinburgh, Scotland, April 1994.

12

Terence J. Parr and Russell W. Quong. ANTLR: A Predicated-- Parser Generator. To appear in Journal of Software Practice and Experience, 1994.

13

T.J. Parr, H.G. Dietz, and W.E. Cohen. PCCTS 1.00: The Purdue Compiler Construction Tool Set. SIGPLAN Notices, 27(2):88--165, February 1992.

14

Neal Stephenson. Snow Crash. Bantam Books, New York, 1992.

15

Josie Wernecke. The Inventor Mentor. Addison-Wesley, 1993.

16

Josie Wernecke. The Inventor Toolmaker. Addison-Wesley, 1994.