This from Michael Spring: The code we have sent is derived from a development effort I have been engaged in to prototype virtual worlds. We have not provided any of the actual code, which is quite unobfuscated and useful. The code enables the rapid prototyping and view of a virtual space constructed quickly and simply from data sets. It allow the user to look at the space from many different perspectives. One of my students used the header recently to visualize the IETF RFC data base! "literary.ps" represents the closest approximation to our current work -- that is, imaging based upon real data from non postscript sources. To protect the innocent we have, I hope thoroughly, obfuscated the data source by making it something literary. You can draw different images by including different text passages! What you will not see in the submission, because we can't quickly obfuscate them, are the more significant headers based on real data that use postscript to navigate virtual worlds.